Searcher for multiple orthogonal channels with known...

Details Searcher for multiple orthogonal channels with known... Searcher for multiple orthogonal channels with known...

2011-06-28

2011-06-28

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S368000

Reexamination Certificate

active

07970043

ABSTRACT:
A circuit and algorithm are disclosed for a step2 search of a three step search of synchronization channels in a W-CDMA system. A mobile terminal of the CDMA system includes an RF downconverter for receiving I and Q signals. A searcher, responsive to the I and Q signals, includes a first correlator for correlating the I and Q signals with a primary synchronization code on a primary synchronization channel, and a second correlator for correlating I and Q signals with a secondary synchronization code on a secondary synchronization channel. The correlated I and Q signals are added for each of the secondary synchronization codes. An energy calculator and a maximum energy detector use the correlated I and Q signals of both the primary and secondary synchronization channels to detect the most likely scrambling code group of secondary synchronization codes.

REFERENCES:
patent: 6728203 (2004-04-01), Wang
patent: 7095811 (2006-08-01), Shikh-Bahaei et al.
patent: 7369577 (2008-05-01), Darbel et al.
patent: 1363407 (2003-11-01), None
patent: 1391999 (2004-02-01), None
patent: WO03026147 (2003-03-01), None
patent: WO03085855 (2003-10-01), None
patent: WO2007051157 (2007-05-01), None
Wang, E.; et al. Cell Search In W-CDMA, IEEE Journal On Selected Areas In Communications, Aug. 1, 2000, vol. 18, No. 8, Xp011055194.
International Search Report and Written Opinion—PCT/US2008/072701, International Search Authority—European Patent Office—Feb. 11, 2009.
Partial International Search, PCT/US2008/072701, International Searching Authority, European Patent Office, Dec. 2, 2008.

Affiliated with

Also associated with

Rating

Searcher for multiple orthogonal channels with known... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Searcher for multiple orthogonal channels with known..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Searcher for multiple orthogonal channels with known... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2693967