EP0400983A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Bit error rate detection
Assignee: Motorola Solutions Inc
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Filing: 1990-05-30
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Granted: —
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Expires: 2010-05-30
Abstract
Abstract There is provided a scheme for bit error rate detection. It is characterised by: detecting the bit value present in a received multi-level signal (102), more narrowly detecting the bit value present in that received multi-level signal (104), comparing the results of narrow detection with the results detected otherwise to identify errors in detection (203, 206, 207 and 209), and accumulating detected symbol errors over unit time. Bit error rate detection can be used for antenna selection-selecting one of a plurality of diversity antennas when the error rate exceeds (213) a certain error threshold.
Inventors
- 👤 Thomas A. Freeburg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04L; H04L1/00; H04L1/20
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
41 words
A method of error detection characterised by: detecting a received signal (102), more narrowly detecting that received signal (104), and comparing the results of narrow detection with the results detected otherwise to identify errors in detection (203, 206, 207 and 209).
Claim 2
Independent Claim
41 words
A method of error detection characterised by: detecting a received signal (102), more narrowly detecting that received signal (104), and comparing the results of narrow detection with the results detected otherwise to identify errors in detection (203, 206, 207 and 209).
Claim 3
Dependent Claim
32 words
A method as claimed in claim 1 above, wherein detected error rates (213) are utilised to dynamically adjust the communications system and affect the error rate upon which the signal was received.
Claim 4
Dependent Claim
29 words
A method of error detection according to claim 1 characterised by: detecting the level of a received signal (102), and more narrowly detecting the level of that received signal.
Claim 5
Dependent Claim
58 words
A method according to claim 1, of bit error rate detection, characterised by: detecting the bit value present in a received signal (102/203), more narrowly detecting the bit value present in that received signal (104/203), and comparing the bit count narrowly detected with the bit count detected otherwise to identify errors in detection (203, 206, 207 and 209).
Claim 6
Dependent Claim
20 words
A method as claimed in claim 4, wherein bit error detection is performed without reference to a known bit sequence.
Claim 7
Dependent Claim
29 words
A method as claimed in claim 4 or 5 above, wherein communication of a known sequence for purposes of assessing error rates can be eliminated to enhance signal throughput.
Claim 8
Dependent Claim
24 words
A method as claimed in claim 4, 5 or 6 above, wherein bit error rate detection can be performed aperiodically, continuously, or at will.
Claim 9
Dependent Claim
38 words
A method as claimed in any one of claim 4 to 7 above, wherein bit error rate (213) can be associated with the detected bit stream to indicate the level of confidence in the detected bit or stream.
Claim 10
Independent Claim
20 words
A method as claimed in any one of the preceding claims, further characterised by: accumulating errors over unit time (206).
Claim 11
Independent Claim
24 words
A method as claimed in any one of the preceding claims, wherein the absence of detected errors (213) enhances the confidence in the detection.
Claim 12
Independent Claim
27 words
A method as claimed in any one of the preceding claims, wherein the narrowness of the narrow detection (104) may be adjusted to the detection confidence desired.
Claim 13
Independent Claim
18 words
A method as claimed in any one of the preceding claims wherein detection is applied to multi-level signals.
Claim 14
Dependent Claim
34 words
A method of antenna selection using error detection according to claim 1 and further characterised by: selecting one of a plurality of diversity antennas when the error rate (213) exceeds a certain error threshold.
Claim 15
Dependent Claim
33 words
A method of handoff using error detection according to claim 1 and further characterized by: selecting one of a plurality of communications channels when the error rate (213) exceeds a certain error threshold.
Claim 16
Dependent Claim
48 words
An error detector characterised by, coupled in series: means for detecting a received signal (102/203), means for more narrowly detecting that received signal (104/203), and means for comparing the results of narrow detection with the results detected otherwise to identify errors in detection (203, 206, 207 and 209).
Claim 17
Dependent Claim
48 words
An error detector characterised by, coupled in series: means for detecting a received signal (102/203), means for more narrowly detecting that received signal (104/203), and means for comparing the results of narrow detection with the results detected otherwise to identify errors in detection (203, 206, 207 and 209).
References Cited (Backward Citations)
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