Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-09-11
2007-09-11
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S316000, C375S347000
Reexamination Certificate
active
10507916
ABSTRACT:
A path detector (100) provides statistics of rates at which preamble signals are detected within a predetermined time period. For a delay amount segment where the detection rate is low, the sampling rate of correlation value calculation is reduced, and the number of correlator sets used for the preamble signal detection is reduced. Correlator sets made available by that reduction are used to detect message signal paths, thereby raising the operating rate of the RAKE receivers of a decoder (200) to improve the throughput of the message signals. Further, the statistics of the rates of preamble signal detections are periodically updated, and when the preamble signal detection rate of the delay amount segment where the sampling rate was reduced becomes higher, the number of the correlator sets used for the preamble signal detection is increased so as to return the sampling rate to its original value.
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Guarino Rahel
Payne David C.
Sughrue Mion Pllc.
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