Low-cost two-stage receiver system for DS-CDMA

Details Low-cost two-stage receiver system for DS-CDMA Low-cost two-stage receiver system for DS-CDMA

2006-05-23

2006-05-23

Pascal, Robert (Department: 2631)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

07050483

ABSTRACT:
A method and apparatus for receiving and processing a DS-CDMA signal in accordance with a two-stage process. The first stage comprises signal detection and employs a correlation between the sampled incoming waveform and a pseudo-noise code sequence. This stage is performed in real-time. Once a signal has been detected, a burst of the sampled incoming waveform is collected and then post-processed to recover the incoming information. The method may be implemented at low-cost on a general-purpose digital signal processor. The invention is especially suitable for DS CDMA location systems, where low-cost and low power consumption are desirable.

REFERENCES:
patent: 5991279 (1999-11-01), Haugli et al.
patent: 6157820 (2000-12-01), Sourour et al.
patent: 6515981 (2003-02-01), Schilling et al.
patent: 2002/0141487 (2002-10-01), Bradley
patent: 2003/0069025 (2003-04-01), Hoctor et al.

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