Spread spectrum receiver using the code division multiple access

Details Spread spectrum receiver using the code division multiple access Spread spectrum receiver using the code division multiple access

1992-11-19

1993-11-30

Swann, Tod R.

Pulse or digital communications

Repeaters

Testing

380 34, H04K 100

Patent

active

052672603

ABSTRACT:
A receiver operated using a spread spectrum code division multiple access mode includes integrators for respectively integrating two signals of an in-phase channel and a quadrature channel, a comparator for comparing the two integrated signals, and a multiplexer for selectively outputting a signal having the greater magnitude between the two signals of the in-phase and quadrature channels in accordance with the result of the comparison in the comparator. Therefore, one channel outputting a signal having the greater magnitude between the two signals is selected to despread and demodulate the signal, using the regular difference of the outputs from the in-phase and quadrature channels. Thus, the favorable channel conditions can be maintained, and the despreading and demodulating can be simplified.

REFERENCES:
patent: 4485477 (1984-11-01), Nossen
patent: 4672629 (1987-06-01), Beier
patent: 5081644 (1992-01-01), Uchida et al.
patent: 5121407 (1992-06-01), Partyka et al.
patent: 5151921 (1992-09-01), Hashimoto
patent: 5179573 (1993-01-01), Paradise

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