Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-12-13
2005-12-13
Deppe, Betsy L. (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C375S227000, C370S342000
Reexamination Certificate
active
06975671
ABSTRACT:
A system for providing an accurate interference value signal received over a channel and transmitted by an external transceiver. The system includes a first receiver section for receiving the signal, which has a desired signal component and an interference component. A signal extracting circuit extracts an estimate of the desired signal component from the received signal. A noise estimation circuit provides the accurate interference value based on the estimate of the desired signal component and the received signal. A look-up table transforms the accurate noise and/or interference value to a normalization factor. A carrier signal-to interference ratio circuit employs the normalization factor and the received signal to compute an accurate carrier signal-to-interference ratio estimate. Path-combining circuitry generates optimal path-combining weights based on the received signal and the normalization factor.
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Esteves Eduardo A. S.
Sindhushayana Nagabhushana T.
Deppe Betsy L.
Godsey Sandra L.
Qualcomm Incorporated
Wadsworth Phil R.
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