Receiver for spectrum spreading communication system

Details Receiver for spectrum spreading communication system Receiver for spectrum spreading communication system

2005-03-15

2005-03-15

Chin, Stephen (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S149000, C375S145000, C375S367000, C375S141000, C370S335000, C370S342000

Reexamination Certificate

active

06868113

ABSTRACT:
A receiver for a spread spectrum communication system includes an acquiring circuit that periodically acquires a plurality of signals received via a plurality of paths from a transmitter. The receiver also includes a plurality of tracking circuits that track the synchronization of a predetermined number of signals among the plurality of signals acquired by the acquiring circuit. The receiver additionally includes a judging circuit that judges whether present and past propagation conditions of the predetermined signals tracked by the plurality of tracking circuits are good or bad. A selecting circuit is included in the receiver to select the predetermined number of signals from the plurality of signals acquired by the acquiring circuit, based upon the present and past propagation conditions of the signals judged by the judging circuit, to allow the plurality of tracking circuits to track the predetermined number of signals selected by the selecting circuit.

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patent: 6377614 (2002-04-01), Yamashita

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