Matched filter circuit and correlation calculation method

Details Matched filter circuit and correlation calculation method Matched filter circuit and correlation calculation method

2008-09-09

2008-09-09

Payne, David C. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S150000, C375S143000, C375S137000, C375S130000

Reexamination Certificate

active

10969980

ABSTRACT:
There are provided input route selecting means711-713and723-725for selecting, in accordance with the oversampling phase, input routes along which reception data and codes are to be input to individual shift register means, a plurality of data shift register means707-710that are caused by the input route selecting means to operate in groups corresponding to respective oversampling phases, code shift register means719-722corresponding to the respective data shift register means707-710,and despreading integration calculating means702and704.Correlation calculations are performed while reception data are stored in the tap groups efficiently, whereby the search window width is increased when the oversampling setting number is low. Further, the power consumption is reduced by lowering the shift frequency of the shift register means.

REFERENCES:
patent: 6370130 (2002-04-01), Zhou et al.
patent: 6389438 (2002-05-01), Zhou
patent: 6487193 (2002-11-01), Hamada et al.
patent: 6891885 (2005-05-01), Imaizumi
patent: 6895038 (2005-05-01), Saito et al.
patent: 2004/0042537 (2004-03-01), Frank
patent: 2004/0071200 (2004-04-01), Betz et al.
patent: 2004/0071289 (2004-04-01), Rose et al.
patent: 11-312952 (1999-11-01), None
patent: 2000-82973 (2000-03-01), None
patent: 3322246 (2002-06-01), None
patent: 2003-32143 (2003-01-01), None

Affiliated with

Also associated with

Rating

Matched filter circuit and correlation calculation method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Matched filter circuit and correlation calculation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matched filter circuit and correlation calculation method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3945401