Method and apparatus for receiving a CDMA signal

Details Method and apparatus for receiving a CDMA signal Method and apparatus for receiving a CDMA signal

2007-12-25

2007-12-25

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S144000, C375S340000

Reexamination Certificate

active

10395831

ABSTRACT:
A hybrid receiver, and an associated method, for receiving a radio signal carrying transmitted data that is subject to distortion in the transmission channel. The receiver includes a plurality of stages that perform parallel interference cancellation (PIC) to establish successively more accurate estimates of the transmitted data, including a receiver first stage being either a RAKE receiver or a linear minimum mean-square error (LMMSE) receiver, a second stage including an LMMSE, and preferably a third stage also including an LMMSE. Each stage processes the estimates of the transmitted signal provided by the stage preceding it to mitigate or eliminate as much transmission-channel interference as possible and prove a refined estimate for processing by subsequent stages. Improved channel estimation may be achieved by processing the pilot signal in similar fashion as well.

REFERENCES:
patent: 5644592 (1997-07-01), Divsalar et al.
patent: 6014373 (2000-01-01), Schilling et al.
patent: 6278732 (2001-08-01), Beidas et al.
patent: 6487221 (2002-11-01), Bertrand et al.
patent: 6512757 (2003-01-01), Niegel et al.
patent: 6519477 (2003-02-01), Baier et al.
patent: 6526103 (2003-02-01), Li et al.
patent: 6570864 (2003-05-01), Kim et al.
patent: 6574271 (2003-06-01), Mesecher et al.
patent: 6707788 (2004-03-01), Kim et al.
patent: 6882678 (2005-04-01), Kong et al.
patent: 2001/0038665 (2001-11-01), Baltersee et al.
patent: 2003/0095590 (2003-05-01), Fuller et al.
patent: 2004/0090906 (2004-05-01), Moshavi et al.
Cho, et.al. Jul. 2000 (IEEE). Performance of the Improved PIC Receiveer for DS—CDMA over.
Lin, et.al. Jun. 2002 (IEEE). A Novel Multiuser DetectionScheme Combining Adaptive MMSE Receiver.
Host-Madsen, et.al. Aug. 1999 (IEEE). MMSE/PIC Multiuser Detection for DS/CDMA Systems with.
Cruickshank., Aug. 1996 (IEEPC). Supression of Multiple Accesx Interference in a DS-CDMA System.

Affiliated with

Also associated with

Rating

Method and apparatus for receiving a CDMA signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for receiving a CDMA signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for receiving a CDMA signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3833325