Code division multiple access receiver

Details Code division multiple access receiver Code division multiple access receiver

2008-05-06

2008-05-06

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S148000, C375S130000, C375S316000, C375S150000, C370S342000, C370S335000, C370S320000, C455S067110

Reexamination Certificate

active

07369601

ABSTRACT:
Processing of a received code division multiple access, CDMA, burst (405) when a spreading factor of the CDMA burst (405) has been changed from an allocated spreading factor (SF0) to a new spreading factor (SFn). The received burst (405) is processed with a CDMA detector (310), using the allocated spreading factor (SF0), to provide a CDMA detector output; the new spreading factor (SFn) of the burst is determined; and the CDMA detector output is decimated by a factor determined from the new spreading factor (SFn). The decimator may be a FIR decimator (315) and tap weights may be determined using the values of the new spreading factor (SFn) and the allocated spreading factor (SF0). Application in a Node B (150A) of a UMTS system (100), particularly in UTRA TDD mode, for processing received uplink communication is described.

REFERENCES:
patent: 6748025 (2004-06-01), Hickling
patent: 6901105 (2005-05-01), Razzell
patent: 2002/0006156 (2002-01-01), Belaiche
patent: 2002/0061005 (2002-05-01), Lee et al.
patent: 1021010 (2000-07-01), None
patent: 1117184 (2001-07-01), None
patent: 2362075 (2001-11-01), None
patent: WO-01/43330 (2001-06-01), None
patent: WO-01/50615 (2001-07-01), None
patent: WO-0176103 (2001-10-01), None
Hasanudin, H, et al. (1999). “Reducing Switch Delay by Reconstruction of Tree Structured Orthogonal Codes in CDMA Mobile Switching System,” Workshop Notes- IEEE International Workshop on Intelligent Signal Processing and Communication System, 585-588.
International Search Report mailed Jan. 1, 2003, for WO Application No. PCT/GB02/04791 filed Oct. 23, 2002, 3 pages.
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Physical Channels and Mapping of Transport Channels onto Physical Channels (TDD) (Release 1999),” (Sep. 2002). 3GPP:Valbonne, France TS 25.221 v3.11.0:1-51.
Great Britain Search Report mailed Jun. 26, 2002, for Great Britain Application No. 0125484.6 filed Oct. 24, 2001, 1 page.
European Examination Report mailed Feb. 1, 2007, for European Application No. 02801963.6 filed Oct. 23, 2002, 5 pages.

Affiliated with

Also associated with

Rating

Code division multiple access receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Code division multiple access receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code division multiple access receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2808009