Code division multiple access receiver

Details Code division multiple access receiver Code division multiple access receiver

2006-03-28

2006-03-28

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S295000, C375S261000, C370S342000, C455S067700

Reexamination Certificate

active

07020181

ABSTRACT:
The present invention provides a code division multiple access receiver which can maintain the accuracy of the result of demodulation of a received signal at a good level without increasing the scale of circuits and the amount of computation.In the code division multiple access receiver, a control section14outputs amplitude-adjusting signals corresponding to the reception level of a received base band signal to an amplitude-adjusting section20,and the amplitude-adjusting section20performs bit operation processes for removing invalid bit data from the complex correlation results of the received base band signal based on the amplitude-adjusting signals.

REFERENCES:
patent: 5982763 (1999-11-01), Sato
patent: 6768729 (2004-07-01), Ohsuge
patent: 2001/0050950 (2001-12-01), Sato
patent: 2002/0054649 (2002-05-01), Kokuryo et al.
patent: 2002/0094782 (2002-07-01), Lin
patent: 2004/0047330 (2004-03-01), Matsuno et al.
patent: 1033824 (2000-09-01), None

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