Multiuser detection of differing data rate signals

Details Multiuser detection of differing data rate signals Multiuser detection of differing data rate signals

2006-07-11

2006-07-11

Burd, Kevin (Department: 2631)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S152000, C375S346000

Reexamination Certificate

active

07075973

ABSTRACT:
A first detector receives a received signal and extracts the data signals from the received signal. A hard decision converter converts soft symbols outputted by the first detector into hard symbols. An interference canceller extracts the voice signals from the received signal. A second detector is connected to the output of the interference canceller, and extracts the individual voice signals. The second detector is a different detector type than the first detector.

REFERENCES:
patent: 6128486 (2000-10-01), Keskitalo et al.
patent: 6615030 (2003-09-01), Saito et al.
patent: 2002/0057730 (2002-05-01), Karlsson et al.
patent: 2004/0090906 (2004-05-01), Moshavi et al.
“Blind Adaptive Multiuser Detection for Asynchronous Dual-Rate DS?CDMA Systems” IEEE journal on Selected Areas in Communications vol. 19 No. 2 Feb. 2001.

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