Spread spectrum receiver for use in communication systems

Details Spread spectrum receiver for use in communication systems Spread spectrum receiver for use in communication systems

1997-11-21

2000-04-18

Pham, Chi H.

Pulse or digital communications

Repeaters

Testing

375347, 375349, 370342, H04B 1500, H04B 710, H04B 110, H04B 7216

Patent

active

060524057

ABSTRACT:
A spread spectrum receiver for use in a mobile communication system is provided which includes a plurality of spread spectrum demodulators, a diversity combiner, a power level detector, a correlation determining circuit, a signal combination determining circuit, and a demodulator phase control circuit.
The correlation determining circuit determines correlation among input multipath signals transmitted through different transmission paths. The signal combination determining circuit selects the same number as that of the spread spectrum demodulators out of the multipath signals, which minimizes a drop in power level of a diversity combined signal outputted from the diversity combiner according to the determined correlation. The demodulator phase control circuit controls phases of demodulating operations of the spread spectrum demodulators to demodulate the selected multipath signals, respectively.

REFERENCES:
patent: 4608701 (1986-08-01), Burgers et al.
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5889815 (1999-03-01), Iwakiri

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