Patent US5758271A successfully refreshed from Google Patents.
US5758271A
Expired / Lapsed
US
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Apparatus and method for optimizing the quality of a received signal in a radio receiver
Assignee: Google Technology Holdings LLC
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Filing: 1997-11-25
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Granted: 1998-05-26
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Expires: 2017-11-25
Abstract
Abstract A code division multiple access (CDMA) radio receiver (104) having gain receives a radio frequency (RF) signal (122) to produce a received signal (124). The quality (130) of the received signal (124) is determined (111). The quality (130) is preferably a ratio of an energy per chip of a desired signal (Ec) to a total power spectral density of the received signal (Io) (124). For alternative radio receivers (104) the quality (130) may be an error rate estimate of a demodulated signal (126). The gain of the radio receiver (104) is adjusted responsive to the quality (130) of the received signal (124) to optimize the quality (130) of the received signal (124). Further, since the adjusted gain also changes a received signal strength indication (RSSI) (242) of the received signal (124), the RSSI (242) of the received signal (124) is estimated (217) and compensated (218) responsive to the gain of the radio receiver (104) to produce a compensated RSSI (134) of the received signal (124) indicative of the RSSI of a desired RF signal (122).
Inventors
- 👤 Randall W. Rich
- 👤 Richard J. Vilmur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:30
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18
Claims Analysis
Total Claims: 128
Claim 1
Independent Claim
147 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; estimating a received signal strength indication (RSSI of the received signal, determining whether the quality of the received signal is favorable or unfavorable; determining whether the RSSI of the received signal is favorable or unfavorable; and adjusting the gain of the radio receiver responsive to the quality of the received signal when both the quality of the received signal and the RSSI of the received signal are favorable, and not adjusting the gain of the radio receiver when either the quality or the RSSI of the received signal is unfavorable or both the quality of the received signal and the RSSI of the received signal are unfavorable.
Claim 2
Independent Claim
147 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; estimating a received signal strength indication (RSSI of the received signal, determining whether the quality of the received signal is favorable or unfavorable; determining whether the RSSI of the received signal is favorable or unfavorable; and adjusting the gain of the radio receiver responsive to the quality of the received signal when both the quality of the received signal and the RSSI of the received signal are favorable, and not adjusting the gain of the radio receiver when either the quality or the RSSI of the received signal is unfavorable or both the quality of the received signal and the RSSI of the received signal are unfavorable.
Claim 3
Dependent Claim
39 words
A method according to claim 1 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 4
Dependent Claim
31 words
A method according to claim 2 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 5
Dependent Claim
61 words
A method according to claim 1 further comprising the step of: demodulating the received signal to produce a demodulated signal; wherein the step of determining the quality of the received signal further comprises the step of estimating an error rate of the demodulated signal; and wherein the step of adjusting is performed responsive to the error rate of the demodulated signal.
Claim 6
Dependent Claim
60 words
A method according to claim 1 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the steps of: compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 7
Dependent Claim
37 words
A method according to claim 1 further comprising the step of: generating a gain control signal responsive to the quality of the received signal; wherein the step of adjusting is performed responsive to the gain control signal.
Claim 8
Dependent Claim
78 words
A method according to claim 6 wherein the step of generating further comprises the steps of: comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and determining the gain control signal responsive to the first and second output signals.
Claim 9
Dependent Claim
69 words
A method according to claim 7 wherein the step of determining further comprises the steps of: multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 10
Dependent Claim
24 words
A method according to claim 6 further comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 11
Dependent Claim
49 words
A method according to claim 6 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 12
Dependent Claim
54 words
A method according to claim 6 further comprising the step of: determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 13
Independent Claim
187 words
A method for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal; comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; summing the gain control step signal with a present gain control signal to produce a future gain control signal; and adjusting the gain of the radio receiver responsive to the future gain control signal.
Claim 14
Independent Claim
187 words
A method for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal; comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; summing the gain control step signal with a present gain control signal to produce a future gain control signal; and adjusting the gain of the radio receiver responsive to the future gain control signal.
Claim 15
Dependent Claim
31 words
A method according to claim 12 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 16
Dependent Claim
72 words
A method according to claim 12 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the steps of: estimating a received signal strength indication (RSSI) of the received signal; and compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 17
Dependent Claim
24 words
A method according to claim 12 further comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 18
Dependent Claim
49 words
A method according to claim 12 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 19
Dependent Claim
54 words
A method according to claim 12 further comprising the step of: determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 20
Independent Claim
212 words
A method for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io); comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; summing the gain control step signal with a present gain control signal to produce a figure gain control signal; and adjusting the gain of the radio receiver responsive to the future gain control signal.
Claim 21
Independent Claim
212 words
A method for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io); comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; summing the gain control step signal with a present gain control signal to produce a figure gain control signal; and adjusting the gain of the radio receiver responsive to the future gain control signal.
Claim 22
Dependent Claim
72 words
A method according to claim 18 wherein the RF signal includes a desired RF signal and an undesired R signal, the method further comprising the steps of: estimating a received signal strength indication (RSSI) of the received signal; and compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 23
Dependent Claim
24 words
A method according to claim 18 further comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 24
Dependent Claim
49 words
A method according to claim 18 wherein the RF signal includes a desired RF signal and an undesired RE signal, the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 25
Dependent Claim
54 words
A method according to claim 18 further comprising the step of: determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 26
Independent Claim
173 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; a first comparator for determining whether the quality of the received signal is favorable or unfavorable; a second comparator for determining whether the RSSJ of the received signal is favorable or unfavorable; and a gain controller for adjusting the gain of the radio receiver responsive to the quality of the received signal when both the quality of the received signal and the RSSI of the received signal are favorable, and for not adjusting the gain of the radio receiver when either the quality of the received signal or the RSSI of the received signal is unfavorable or both the quality of the received signal and the RSSI of the received signal are unfavorable.
Claim 27
Independent Claim
173 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; a first comparator for determining whether the quality of the received signal is favorable or unfavorable; a second comparator for determining whether the RSSJ of the received signal is favorable or unfavorable; and a gain controller for adjusting the gain of the radio receiver responsive to the quality of the received signal when both the quality of the received signal and the RSSI of the received signal are favorable, and for not adjusting the gain of the radio receiver when either the quality of the received signal or the RSSI of the received signal is unfavorable or both the quality of the received signal and the RSSI of the received signal are unfavorable.
Claim 28
Dependent Claim
39 words
An apparatus according to claim 23 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 29
Dependent Claim
31 words
An apparatus according to claim 24 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 30
Dependent Claim
59 words
An apparatus according to claim 23 further: a demodulator for demodulating the received signal to produce a demodulated signal; wherein the signal quality determiner further comprises an error rate estimator for estimating an error rate of the demodulated signal; and wherein gain controller adjusts the gain of the radio receiver responsive to the error rate of the demodulated signal.
Claim 31
Dependent Claim
61 words
An apparatus according to claim 23 wherein the RF signal includes a desired RP signal and an undesired RF signal, the apparatus further comprising: a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 32
Dependent Claim
41 words
An apparatus according to claim 23: wherein the gain controller generates a gain control signal responsive to the quality of the received signal; and wherein the gain controller adjusts the gain of the radio receiver responsive to the gain control signal.
Claim 33
Dependent Claim
88 words
An apparatus according to claim 28 wherein the gain controller further comprises: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and a gain control signal determiner for determining the gain control signal responsive to the first and second output signals.
Claim 34
Dependent Claim
78 words
An apparatus according to claim 29 wherein the gain control signal determiner further comprises: a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 35
Dependent Claim
28 words
An apparatus according to claim 28 wherein the gain controller further comprises: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 36
Dependent Claim
50 words
An apparatus according to claim 28 wherein the RF signal includes a desired RF signal an undesired RF signal, wherein the gain controller further comprises: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 37
Dependent Claim
70 words
An apparatus according to claim 28 wherein the gain controller further comprises: a gain control signal determiner for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 38
Independent Claim
219 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal; a gain controller comprising: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal; wherein the gain controller adjusts the gain of the radio receiver responsive to the future gain control signal.
Claim 39
Independent Claim
219 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal; a gain controller comprising: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal; wherein the gain controller adjusts the gain of the radio receiver responsive to the future gain control signal.
Claim 40
Dependent Claim
31 words
An apparatus according to claim 34 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 41
Dependent Claim
76 words
An apparatus according to claim 34 wherein the RF signal includes a desired RF signal an undesired RF signal, the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; and a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 42
Dependent Claim
24 words
An apparatus according to claim 34 further comprising: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 43
Dependent Claim
49 words
An apparatus according to claim 34 wherein the RF signal includes a desired RF signal and an undesired RE signal, the apparatus further comprising: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 44
Dependent Claim
66 words
An apparatus according to claim 34 further comprising: a gain control signal determininer for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 45
Independent Claim
244 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io); a gain controller comprising: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying die multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal; wherein the gain controller adjusts the gain of the radio receiver responsive to the future gain control signal.
Claim 46
Independent Claim
244 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, wherein the received signal includes a desired signal and an undesired signal, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io); a gain controller comprising: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying die multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal; wherein the gain controller adjusts the gain of the radio receiver responsive to the future gain control signal.
Claim 47
Dependent Claim
76 words
An apparatus according to claim 40 wherein the RF signal includes a desired RF signal an undesired RF signal, the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; and a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 48
Dependent Claim
24 words
An apparatus according to claim 40 further comprising: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 49
Dependent Claim
49 words
An apparatus according to claim 40 wherein the RF signal includes a desired RF signal and an undesired RF signal, the apparatus flirter comprising: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 50
Dependent Claim
66 words
An apparatus according to claim 40 further comprising: a gain control signal determiner for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 51
Independent Claim
116 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and determining a gain control signal responsive to the first and second output signals; and adjusting the gain of the radio receiver responsive to the gain control signal.
Claim 52
Independent Claim
116 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and determining a gain control signal responsive to the first and second output signals; and adjusting the gain of the radio receiver responsive to the gain control signal.
Claim 53
Dependent Claim
39 words
A method according to claim 45 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 54
Dependent Claim
31 words
A method according to claim 46 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 55
Dependent Claim
61 words
A method according to claim 45 further comprising the step of: demodulating the received signal to produce a demodulated signal; wherein the step of determining the quality of the received signal further comprises the step of estimating an error rate of the demodulated signal; and wherein the step of adjusting is performed responsive to the error rate of the demodulated signal.
Claim 56
Dependent Claim
72 words
A method according to claim 45 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the steps of: estimating a received signal strength indication (RSSI) of the received signal; and compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 57
Dependent Claim
104 words
A method according to claim 45 the method further comprising the step of estimating a received signal strength indication (RSSI) of the received signal; determining whether the quality of the received signal is favorable or unfavorable; and determining whether the RSSI of the received signal is favorable or unfavorable; wherein the step of adjusting is performed when both the quality and the RSSI of the received signal are favorable; and wherein the step of adjusting is not performed when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 58
Dependent Claim
60 words
A method according to claim 50 wherein the RF signal includes a desired RE signal and an undesired RF signal, the method further comprising the step of: compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 59
Dependent Claim
69 words
A method according to claim 45 wherein the step of determining further comprises the steps of: multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 60
Dependent Claim
24 words
A method according to claim 45 further comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 61
Dependent Claim
49 words
A method according to claim 45 wherein the RF signal includes a desired RF signal and an undesired RF signal the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 62
Dependent Claim
54 words
A method according to claim 45 further comprising the step of determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 63
Independent Claim
139 words
An apparatus for operating a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and a gain control signal determiner for determining a gain control signal responsive to the first and second output signals; and a gain controller for adjusting the gain of the radio receiver responsive to the gain control signal.
Claim 64
Independent Claim
139 words
An apparatus for operating a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and a gain control signal determiner for determining a gain control signal responsive to the first and second output signals; and a gain controller for adjusting the gain of the radio receiver responsive to the gain control signal.
Claim 65
Dependent Claim
39 words
An apparatus according to claim 56 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 66
Dependent Claim
31 words
An apparatus according to claim 57 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 67
Dependent Claim
59 words
An apparatus according to claim 56 further: a demodulator for demodulating the received signal to produce a demodulated signal; wherein the signal quality determiner further comprises an error rate estimator for estimating an error rate of the demodulated signal; and wherein gain controller adjusts the gain of the radio receiver responsive to the error rate of the demodulated signal.
Claim 68
Dependent Claim
77 words
An apparatus according to claim 56 wherein the RF signal includes a desired RF signal and an undesired RF signal, the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; and a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RE signal.
Claim 69
Dependent Claim
122 words
An apparatus according to claim 56 the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; a first comparator for determining whether the quality of the received signal is favorable or unfavorable; and a second comparator for determining whether the RSSI of he received signal is favorable or unfavorable; wherein the gain controller adjusts the gain of the radio receiver when both the quality and the RSSI of the received signal are favorable; and wherein the gain controller does not adjust the gain of the radio receiver when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 70
Dependent Claim
61 words
An apparatus according to claim 61 wherein the RF signal includes a desired RF signal and an undesired RF signal, the apparatus further comprising: a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 71
Dependent Claim
78 words
An apparatus according to claim 56 wherein the gain control signal determiner further comprises: a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 72
Dependent Claim
28 words
An apparatus according to claim 56 wherein the gain controller further comprises: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 73
Dependent Claim
51 words
An apparatus according to claim 56 wherein the RF signal includes a desired RF signal and an undesired RF signal, wherein the gain controller further comprises: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (kSSI) of the desired RF signal.
Claim 74
Dependent Claim
70 words
An apparatus according to claim 56 wherein the gain controller further comprises: a gain control signal determiner for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 75
Independent Claim
178 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; determining a signal power level of the received signal; determining a signal power of interfering signals received by the radio receiver which cause intermodulation distortion to be generated within the radio receiver, wherein a signal power level of the interfering signals increases as the gain of the radio receiver increases; determining a signal power level of thermal noise in the radio receiver, wherein the signal power level of the thermal noise decreases as the gain of the radio receiver decreases; and continuously steering the gain of the radio receiver responsive to the quality of the received signal to maximize a ratio of the signal power of the received signal to a summation of the signal power level of the interfering signals and the signal power level of the thermal noise thereby optimizing the quality of the received signal.
Claim 76
Independent Claim
178 words
A method for optimizing a quality of a received signal in a radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal; determining the quality of the received signal; determining a signal power level of the received signal; determining a signal power of interfering signals received by the radio receiver which cause intermodulation distortion to be generated within the radio receiver, wherein a signal power level of the interfering signals increases as the gain of the radio receiver increases; determining a signal power level of thermal noise in the radio receiver, wherein the signal power level of the thermal noise decreases as the gain of the radio receiver decreases; and continuously steering the gain of the radio receiver responsive to the quality of the received signal to maximize a ratio of the signal power of the received signal to a summation of the signal power level of the interfering signals and the signal power level of the thermal noise thereby optimizing the quality of the received signal.
Claim 77
Dependent Claim
39 words
A method according to claim 67 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 78
Dependent Claim
31 words
A method according to claim 68 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 79
Dependent Claim
61 words
A method according to claim 67 further comprising the step of demodulating the received signal to produce a demodulated signal; wherein the step of determining the quality of the received signal filter comprises the step of estimating an error rate of the demodulated signal; and wherein the step of adjusting is performed responsive to the error rate of the demodulated signal.
Claim 80
Dependent Claim
72 words
A method according to claim 67 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the steps of; estimating a received signal strength indication (RSSI) of the received signal; and compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 81
Dependent Claim
104 words
A method according to claim 67 the method further comprising the step of: estimating a received signal strength indication (RSSI) of the received signal; determining whether the quality of the received signal is favorable or unfavorable; and determining whether the RSSI of the received signal is favorable or unfavorable; wherein the step of adjusting is performed when both the quality and the RSSI of the received signal are favorable; and wherein the step of adjusting is not performed when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 82
Dependent Claim
60 words
A method according to claim 72 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the step of: compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 83
Dependent Claim
37 words
A method according to claim 67 further comprising the step of: generating a gain control signal responsive to the quality of the received signal; wherein the step of adjusting is performed responsive to the gain control signal.
Claim 84
Dependent Claim
78 words
A method according to claim 74 wherein the step of generating further comprises the steps of: comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and determining the gain control signal responsive to the fist and second output signals.
Claim 85
Dependent Claim
69 words
A method according to claim 75 wherein the step of determining further comprises the steps of, multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 86
Dependent Claim
24 words
A method according to claim 74 further comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 87
Dependent Claim
49 words
A method according to claim 74 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RE signal.
Claim 88
Dependent Claim
54 words
A method according to claim 74 further comprising the step of: determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 89
Independent Claim
170 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; and a gain controller for continuously steering the gain of the radio receiver responsive to the quality of the received signal to maximize a ratio of a signal power of the received signal to a summation of a signal power level of interfering signals received by the radio receiver and a signal power level of thermal noise in the radio receiver thereby optimizing the quality of the received signal, wherein the interfering signals received by the radio receiver cause intermodulation distortion to be generated within the radio receiver, wherein the signal power level of the interfering signals increases as the gain of the radio receiver increases and wherein the signal power level of the thermal noise decreases as the gain of the radio receiver decreases.
Claim 90
Independent Claim
170 words
An apparatus for optimizing a quality of a received signal in a radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal; a signal quality determiner for determining the quality of the received signal; and a gain controller for continuously steering the gain of the radio receiver responsive to the quality of the received signal to maximize a ratio of a signal power of the received signal to a summation of a signal power level of interfering signals received by the radio receiver and a signal power level of thermal noise in the radio receiver thereby optimizing the quality of the received signal, wherein the interfering signals received by the radio receiver cause intermodulation distortion to be generated within the radio receiver, wherein the signal power level of the interfering signals increases as the gain of the radio receiver increases and wherein the signal power level of the thermal noise decreases as the gain of the radio receiver decreases.
Claim 91
Dependent Claim
39 words
An apparatus according to claim 80 wherein the received signal includes a desired signal and an undesired signal, and wherein the quality of the received signal further comprises: a ratio indicative of the desired signal to the received signal.
Claim 92
Dependent Claim
31 words
An apparatus according to claim 81 wherein the ratio further comprises: an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io).
Claim 93
Dependent Claim
59 words
An apparatus according to claim 80 further: a demodulator for demodulating the received signal to produce a demodulated signal; wherein the signal quality determiner further comprises an error rate estimator for estimating an error rate of the demodulated signal; and wherein gain controller adjusts the gain of the radio receiver responsive to the error rate of the demodulated signal.
Claim 94
Dependent Claim
77 words
An apparatus according to claim 80 wherein the R signal includes a desired RF signal and an undesired RF signal, the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; and a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 95
Dependent Claim
122 words
An apparatus according to claim 80 the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; a first comparator for determining whether the quality of the received signal is favorable or unfavorable; and a second comparator for determining whether the RSSI of the received signal is favorable or unfavorable; wherein the gain controller adjusts the gain of the radio receiver when both the quality and the RSSI of the received signal are favorable; and wherein the gain controller does not adjust the gain of the radio receiver when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 96
Dependent Claim
61 words
An apparatus according to claim 85 wherein the RF signal includes a desired RF signal and an undesired RF signal, the apparatus further comprising: a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RE signal.
Claim 97
Dependent Claim
41 words
An apparatus according to claim 80: wherein the gain controller generates a gain control signal responsive to the quality of the received signal; and wherein the gain controller adjusts the gain of the radio receiver responsive to the gain control signal.
Claim 98
Dependent Claim
88 words
An apparatus according to claim 87 wherein the gain controller further comprises: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and a gain control signal determiner for determining the gain control signal responsive to the first and second output signals.
Claim 99
Dependent Claim
78 words
An apparatus according to claim 88 wherein the gain control signal determiner further comprises: a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 100
Dependent Claim
28 words
An apparatus according to claim 87 wherein the gain controller further comprises: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 101
Dependent Claim
51 words
An apparatus according to claim 87 wherein the RF signal includes a desired RF signal and an undesired RF signal, wherein the gain controller further comprises: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RP signal.
Claim 102
Dependent Claim
70 words
An apparatus according to claim 87 wherein the gain controller further comprises: a gain control signal determiner for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 103
Independent Claim
203 words
A method for optimizing a quality of a received signal in a direct sequence--code division multiple access (DS-CDMA) radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal, wherein the received signal includes a desired signal and an undesired signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (lo), wherein the ratio provides an indication of whether interfering signals are received by the DS-CDMA radio receiver which cause intermodulation distortion to be generated within the radio receiver; and decreasing the gain of the radio receiver when interfering signals are determined to be received to increase the linearity of the DS-CDMA radio receiver which reduces the intermodulation distortion thereby improving the quality of the received signal; and increasing the gain of the radio receiver when interfering signals are determined not to be received to decrease the linearity of the DS-CDMA radio receiver thereby improving the quality of the received signal.
Claim 104
Independent Claim
203 words
A method for optimizing a quality of a received signal in a direct sequence--code division multiple access (DS-CDMA) radio receiver having gain, the method comprising the steps of: receiving a radio frequency (RF) signal to produce the received signal, wherein the received signal includes a desired signal and an undesired signal; determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (lo), wherein the ratio provides an indication of whether interfering signals are received by the DS-CDMA radio receiver which cause intermodulation distortion to be generated within the radio receiver; and decreasing the gain of the radio receiver when interfering signals are determined to be received to increase the linearity of the DS-CDMA radio receiver which reduces the intermodulation distortion thereby improving the quality of the received signal; and increasing the gain of the radio receiver when interfering signals are determined not to be received to decrease the linearity of the DS-CDMA radio receiver thereby improving the quality of the received signal.
Claim 105
Dependent Claim
32 words
A method according to claim 93 wherein the step of adjusting farther comprises the step of continuously steering the gain of the radio receiver responsive to the quality of the received signal.
Claim 106
Dependent Claim
61 words
A method according to claim 93 further comprising the step of: demodulating the received signal to produce a demodulated signal; wherein the step of determining the quality of the received signal further comprises the step of estimating an error rate of the demodulated signal; and wherein the step of adjusting is performed responsive to the error rate of the demodulated signal.
Claim 107
Dependent Claim
72 words
A method according to claim 93 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method filter comprising the steps of: estimating a received signal strength indication (RSSI) of the received signal; and compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 108
Dependent Claim
104 words
A method according to claim 93 the method further comprising the step of: estimating a received signal strength indication (RSSI) of the received signal; determining whether the quality of the received signal is favorable or unfavorable; and determine whether the RSSI of the received signal is favorable or unfavorable; wherein the step of adjusting is performed when both the quality and the RSSI of the received signal are favorable; and wherein the step of adjusting is not performed when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 109
Dependent Claim
44 words
A method according to claim 97 further comprising the step of: compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 110
Dependent Claim
37 words
A method according to claim 93 further comprising the step of: generating a gain control signal responsive to the quality of the received signal; wherein the step of adjusting is performed responsive to the gain control signal.
Claim 111
Dependent Claim
78 words
A method according to claim 99 wherein the step of generating further comprises the steps of: comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and determining the gain control signal responsive to the first and second output signals.
Claim 112
Dependent Claim
69 words
A method according to claim 100 wherein the step of determining further comprises the steps of: multiplying the first output signal and the second output signal to produce a multiplied signal; multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and summing the gain control step signal with a present gain control signal to produce a further gain control signal.
Claim 113
Dependent Claim
24 words
A method according to claim 99 fibber comprising the step of: limiting the gain control signal between a maximum value and a minimum value.
Claim 114
Dependent Claim
49 words
A method according to claim 99 wherein the RF signal includes a desired RF signal and an undesired RF signal, the method further comprising the step of: limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RF signal.
Claim 115
Dependent Claim
54 words
A method according to claim 99 further comprising the step of: determining whether the gain control signal is favorable or unfavorable; adjusting a first gain stage of the radio receiver when the gain control signal is favorable; and adjusting a second gain stage of the radio receiver when the gain control signal is unfavorable.
Claim 116
Independent Claim
205 words
An apparatus for optimizing a quality of a received signal in a direct sequence--code division multiple access (DS-CDMA) radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal, wherein the received signal includes a desired signal and an undesired signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io), wherein the ratio provides and indication of whether interfering signals are received by the DS-CDMA radio receiver which cause intermodulation distortion to be generated within the radio receiver; and a gain controller for improving the quality of the received signal by decreasing the gain of the radio receiver when interfering signals are determined to be received to increase the linearity of the DS-CDMA radio receiver which reduces the intermodulation distortion and by increasing the gain of the radio receiver when interfering signals are determined not to be received to decrease the linearity of the DS-CDMA radio receiver.
Claim 117
Independent Claim
205 words
An apparatus for optimizing a quality of a received signal in a direct sequence--code division multiple access (DS-CDMA) radio receiver having gain, the apparatus comprising: a receiver for receiving a radio frequency (RF) signal to produce the received signal, wherein the received signal includes a desired signal and an undesired signal; a signal quality determiner for determining the quality of the received signal, wherein the quality of the received signal further comprises a ratio indicative of the desired signal to the received signal, wherein the ratio further comprises an energy per chip of the desired signal (Ec) to a total power spectral density of the received signal (Io), wherein the ratio provides and indication of whether interfering signals are received by the DS-CDMA radio receiver which cause intermodulation distortion to be generated within the radio receiver; and a gain controller for improving the quality of the received signal by decreasing the gain of the radio receiver when interfering signals are determined to be received to increase the linearity of the DS-CDMA radio receiver which reduces the intermodulation distortion and by increasing the gain of the radio receiver when interfering signals are determined not to be received to decrease the linearity of the DS-CDMA radio receiver.
Claim 118
Dependent Claim
34 words
An apparatus according to claim 105 wherein the gain controller adjusts the gain of the radio receiver by continuously steering the gain of the radio receiver responsive to the quality of the received signal.
Claim 119
Dependent Claim
60 words
An apparatus according to claim 105 further comprising: a demodulator for demodulating the received signal to produce a demodulated signal; wherein the signal quality determiner further comprises an error rate estimator for estimating an error rate of the demodulated signal; and wherein gain controller adjusts the gain of the radio receiver responsive to the error rate of the demodulated signal.
Claim 120
Dependent Claim
77 words
An apparatus according to claim 105 wherein the RF signal includes a desired RF signal and an undesired RF signal, the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; and a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 121
Dependent Claim
122 words
An apparatus according to claim 105 the apparatus further comprising: a received signal strength indication (RSSI) estimator for estimating the RSSI of the received signal; a first comparator for determining whether the quality of the received signal is favorable or unfavorable, and a second comparator for determining whether the PSSI of the received signal is favorable or unfavorable; wherein the gain controller adjusts the gain of the radio receiver when both the qualify and the RSSI of the received signal are favorable; and wherein the gain controller does not adjust the gain of the radio receiver when either the quality or the RSSI of the received signal is unfavorable or both the quality and the RSSI of the received signal are unfavorable.
Claim 122
Dependent Claim
45 words
An apparatus according to claim 109 further comprising: a RSSI compensator for compensating the RSSI of the received signal responsive to the gain of the radio receiver to produce a compensated RSSI of the received signal indicative of the RSSI of the desired RF signal.
Claim 123
Dependent Claim
41 words
An apparatus according to claim 105: wherein the gain controller generates a gain control signal responsive to the quality of the received signal; and wherein the gain controller adjusts the gain of the radio receiver responsive to the gain control signal.
Claim 124
Dependent Claim
88 words
An apparatus according to claim 111 wherein the gain controller further comprises: a first comparator for comparing a present measurement of the quality of the received signal with a past measurement of the quality of the received signal to produce a first output signal; a second comparator for comparing a present measurement of the gain with a past measurement of the gain to produce a second output signal; and a gain control signal determiner for determining the gain control signal responsive to the first and second output signals.
Claim 125
Dependent Claim
78 words
An apparatus according to claim 112 wherein the gain control signal determiner further comprises: a first multiplier for multiplying the first output signal and the second output signal to produce a multiplied signal; a second multiplier for multiplying the multiplied signal by a predetermined gain control step value to produce a gain control step signal; and a summer for summing the gain control step signal with a present gain control signal to produce a future gain control signal.
Claim 126
Dependent Claim
28 words
An apparatus according to claim 112 wherein the gain controller further comprises: a limiter for limiting the gain control signal between a maximum value and a minimum value.
Claim 127
Dependent Claim
51 words
An apparatus according to claim 112 wherein the RF signal includes a desired RF signal and an undesired RE signal, wherein the gain controller further comprises: a limiter for limiting the gain control signal to a maximum value responsive to a received signal strength indication (RSSI) of the desired RE signal.
Claim 128
Dependent Claim
70 words
An apparatus according to claim 111 wherein the gain controller further comprises: a gain control signal determiner for determining whether the gain control signal is favorable or unfavorable; and a switch permitting the gain controller to adjust a first gain stage of the radio receiver when the gain control signal is favorable and to adjust a second gain stage of the radio receiver when the gain control signal is unfavorable.
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