Signal strength assisted searcher and acquisition

Details Signal strength assisted searcher and acquisition Signal strength assisted searcher and acquisition

2008-03-04

2008-03-04

Tran, Khai (Department: 2611)

Pulse or digital communications

Spread spectrum

Chirp

Reexamination Certificate

active

07339977

ABSTRACT:
A code division, multiple access (CDMA) receiver includes an RF section for receiving a CDMA signal through a channel; a circuit for determining an instantaneous total received power (Io) of the received CDMA signal; and a searcher that is one of enabled for operation or disabled from operation in accordance with value of Io. The circuit includes a comparator for comparing Io against a threshold, and for generating a searcher trigger signal only when Io exceeds the threshold or, preferably, for generating the searcher trigger signal if Io does not exceed the threshold, within some predetermined period of time.

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