US5359607A
Expired / Lapsed
US
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Adaptive intermodulation control
Assignee: Motorola Solutions Inc
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Filing: 1991-11-13
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Granted: 1994-10-25
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Expires: 2011-11-13
Abstract
Abstract A radio receiver (100) having a receiver section (103) receives and processes an information signal to provide received information having an error factor that varies at least with respect to operational parameters of the receiver section (103). In the radio receiver (100), a method is embodied for adaptively controlling the operational parameters of the receiver section (103) to optimize the error factor of the received information. The method (400, 400', 400") comprises operating in a first receiver mode in response to a predetermined mode select parameter, correlating a first signal recovered from the received information to at least a portion of a first code word to establish a first error criteria, and operating in the first receiver mode while the first error criteria does not exceed a predetermined error criteria.
Inventors
- 👤 Tuan K. Nguyen
- 👤 Xuan-Khanh T. Tran
- 👤 Richard A. Erhart
- 👤 David J. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:19
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/109; G; G08; G08B; G08B5/00; G08B5/22; G08B5/222; G08B5/223; G08B5/224; G08B5/229
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
143 words
In a radio receiver having a receiver section that receives and processes an information signal to provide received information having an error factor that varies at least with respect to operational parameters of the receiver section, a method for adaptively controlling the operational parameters thereof to optimize the error factor of the received information, comprising the steps of: (a) operating in a first receiver mode in response to a predetermined mode select parameter; (b) correlating a first signal recovered from the received information to at least a portion of a first code word to establish a first error criteria when operating in said first receiver mode; (c) maintaining operation in the first receiver mode when the first error criteria does not exceed a predetermined error criteria; and performing steps (b) and (c) when a group count does not equal a predetermined group count.
Claim 2
Dependent Claim
143 words
In a radio receiver having a receiver section that receives and processes an information signal to provide received information having an error factor that varies at least with respect to operational parameters of the receiver section, a method for adaptively controlling the operational parameters thereof to optimize the error factor of the received information, comprising the steps of: (a) operating in a first receiver mode in response to a predetermined mode select parameter; (b) correlating a first signal recovered from the received information to at least a portion of a first code word to establish a first error criteria when operating in said first receiver mode; (c) maintaining operation in the first receiver mode when the first error criteria does not exceed a predetermined error criteria; and performing steps (b) and (c) when a group count does not equal a predetermined group count.
Claim 3
Dependent Claim
14 words
The method according to claim 1 wherein the first signal is a group identifier.
Claim 4
Dependent Claim
15 words
The method according to claim 1 wherein the first signal is a bit synchronization preamble.
Claim 5
Dependent Claim
15 words
The method according to claim 1 wherein the first signal is a frame synchronization word.
Claim 6
Dependent Claim
14 words
The method according to claim 1 wherein the first signal is a test word.
Claim 7
Dependent Claim
14 words
The method according to claim 1 wherein the first signal is an address word.
Claim 8
Dependent Claim
14 words
The method according to claim 1 wherein the first signal is a data word.
Claim 9
Dependent Claim
63 words
The method according to claim 1 further comprising the steps of: (d) operating in a second receiver mode in response to the first error criteria exceeding the predetermined error criteria; and (e) correlating a second signal recovered from the information to at least a portion of a second code word to establish a second error criteria when operating in said second receiver mode.
Claim 10
Dependent Claim
14 words
The method according to claim 8 wherein the second signal is a group identifier.
Claim 11
Dependent Claim
15 words
The method according to claim 8 wherein the second signal is a bit synchronization preamble.
Claim 12
Dependent Claim
15 words
The method according to claim 8 wherein the second signal is a frame synchronization word.
Claim 13
Dependent Claim
14 words
The method according to claim 8 wherein the second signal is a test word.
Claim 14
Dependent Claim
14 words
The method according to claim 8 wherein the second signal is an address word.
Claim 15
Dependent Claim
14 words
The method according to claim 8 wherein the second signal is a data word.
Claim 16
Dependent Claim
28 words
The method according to claim 8 further comprising the step of: (f) performing steps (d) and (e) while the group count does not equal the predetermined group count.
Claim 17
Dependent Claim
35 words
The method according to claim 15 further comprising the steps of: (g) switching from the second receiver mode to the first receiver mode in response to the second error criteria exceeding the first error criteria.
Claim 18
Dependent Claim
35 words
The method according to claim 15 further comprising the steps of: (g) switching from the first receiver mode to the second receiver mode in response to the first error criteria exceeding the second error criteria.
Claim 19
Dependent Claim
20 words
The method according to claim 8 wherein the first and second receiver modes are low and high gain modes, respectively.
Claim 20
Dependent Claim
20 words
The method according to claim 8 wherein the first and second receiver modes are high and low gain modes, respectively.
Claim 21
Dependent Claim
23 words
The method according to claim 8 wherein the first and second error criteria are established using at least one BCH code word syndrome.
Claim 22
Dependent Claim
19 words
The method according to claim 8 wherein the first and second error criteria are established using a bit-by-bit correlation.
Claim 23
Dependent Claim
30 words
The method according to claim 21 wherein the bit-by-bit correlation comprises the step of: (f) exclusive-oring a predetermined bit pattern with a received bit pattern yielding a resultant bit pattern.
Claim 24
Dependent Claim
19 words
The method according to claim 22 wherein the resultant bit pattern comprises all like bits for an error-free correlation.
Claim 25
Dependent Claim
21 words
The method according to claim 22 wherein the resultant bit pattern comprises at least one un-like bit for an error-present correlation.
Claim 26
Dependent Claim
35 words
The method according to claim 8 wherein the first and second error criteria are established using a weighted number of correlation samples that are individually accumulated in each of the first and second receiver modes.
Claim 27
Dependent Claim
135 words
A radio receiver capable of being selectively addressed and having a receiver section that receives and processes an information signal to provide received information having an error factor that varies at least with respect to operational parameters of the receiver section, comprising: (a) means for operating in a first receiver mode in response to a predetermined mode select parameter; (b) means for correlating a first signal recovered from the received information to at least a portion of a first code word to establish a first error criteria when operating in said first receiver mode; and (c) means for maintaining operation of means (b) when a group count does not equal a predetermined group count, the first error criteria does not exceed a predetermined error criteria, and the receiver is operating in the first receiver mode.
Claim 28
Dependent Claim
135 words
A radio receiver capable of being selectively addressed and having a receiver section that receives and processes an information signal to provide received information having an error factor that varies at least with respect to operational parameters of the receiver section, comprising: (a) means for operating in a first receiver mode in response to a predetermined mode select parameter; (b) means for correlating a first signal recovered from the received information to at least a portion of a first code word to establish a first error criteria when operating in said first receiver mode; and (c) means for maintaining operation of means (b) when a group count does not equal a predetermined group count, the first error criteria does not exceed a predetermined error criteria, and the receiver is operating in the first receiver mode.
Claim 29
Dependent Claim
15 words
The radio receiver according to claim 26 wherein the first signal is a group identifier.
Claim 30
Dependent Claim
16 words
The radio receiver according to claim 26 wherein the first signal is a bit synchronization preamble.
Claim 31
Dependent Claim
16 words
The radio receiver according to claim 26 wherein the first signal is a frame synchronization word.
Claim 32
Dependent Claim
15 words
The radio receiver according to claim 26 wherein the first signal is a test word.
Claim 33
Dependent Claim
15 words
The radio receiver according to claim 26 wherein the first signal is an address word.
Claim 34
Dependent Claim
15 words
The radio receiver according to claim 26 wherein the first signal is a data word.
Claim 35
Dependent Claim
65 words
The radio receiver according to claim 26 further comprising: (d) means for operating in a second receiver mode in response to the first error criteria exceeding the predetermined error criteria; and (e) means for correlating a second signal recovered from the information to at least a portion of a second code word to establish a second error criteria when operating in said second receiver mode.
Claim 36
Dependent Claim
15 words
The radio receiver according to claim 33 wherein the second signal is a group identifier.
Claim 37
Dependent Claim
16 words
The radio receiver according to claim 33 wherein the second signal is a bit synchronization preamble.
Claim 38
Dependent Claim
16 words
The radio receiver according to claim 33 wherein the second signal is a frame synchronization word.
Claim 39
Dependent Claim
15 words
The radio receiver according to claim 33 wherein the second signal is a test word.
Claim 40
Dependent Claim
15 words
The radio receiver according to claim 33 wherein the second signal is an address word.
Claim 41
Dependent Claim
15 words
The radio receiver according to claim 33 wherein the second signal is a data word.
Claim 42
Dependent Claim
25 words
The radio receiver according to claim 33 wherein means (c), (d), and (e) operate when the group count does not equal the predetermined group count.
Claim 43
Dependent Claim
35 words
The radio receiver according to claim 33 further comprising: (f) means for switching from the second receiver mode to the first receiver mode in response to the second error criteria exceeding the first error criteria.
Claim 44
Dependent Claim
35 words
The radio receiver according to claim 33 further comprising: (f) means for switching from the first receiver mode to the second receiver mode in response to the first error criteria exceeding the second error criteria.
Claim 45
Dependent Claim
21 words
The radio receiver according to claim 33 wherein the first and second receiver modes are low and high gain modes, respectively.
Claim 46
Dependent Claim
21 words
The radio receiver according to claim 33 wherein the first and second receiver modes are high and low gain modes, respectively.
Claim 47
Dependent Claim
24 words
The radio receiver according to claim 33 wherein the first and second error criteria are established using at least one BCH code word syndrome.
Claim 48
Dependent Claim
20 words
The radio receiver according to claim 33 wherein the first and second error criteria are established using a bit-by-bit correlation.
Claim 49
Dependent Claim
27 words
The radio receiver according to claim 46 wherein the bit-by-bit correlation comprises exclusive-oring a predetermined bit pattern with a received bit pattern yielding a resultant bit pattern.
Claim 50
Dependent Claim
20 words
The radio receiver according to claim 47 wherein the resultant bit pattern comprises all like bits for an error-free correlation.
Claim 51
Dependent Claim
22 words
The radio receiver according to claim 47 wherein the resultant bit pattern comprises at least one un-like bit for an error-present correlation.
Claim 52
Dependent Claim
36 words
The radio receiver according to claim 33 wherein the first and second error criteria are established using a weighted number of correlation samples that are individually accumulated in each of the first and second receiver modes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |