Pulse or digital communications – Receivers
Reexamination Certificate
2006-07-18
2006-07-18
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Receivers
C375S340000, C370S209000
Reexamination Certificate
active
07079592
ABSTRACT:
The present invention relates to both of a bi-stage correlation calculation demodulation system, and a fast walsh block demodulation device at a receiver, wherein the bi-stage correlation calculation demodulation system has a characteristic of bi-stage correlation calculation in which the subsequent second-stage correlation calculations are dependent on the first-stage correlation calculation results by utilizing an incomplete orthogonal property within CCK codewords to arrange the CCK codewords operated in the first-stage correlation calculations and second-stage correlation calculations properly and respectively. The fast walsh block demodulation device comprises: a plurality of adders (operators) constructed to be a first-level correlation calculation circuit and a second-level correlation calculation circuit, and a plurality of process modules constructed to be a third-level correlation calculation circuit, the process modules having the functions of picking one maximum value from four values and performing third-level correlation calculation of conventional basic fast walsh block demodulation device.
REFERENCES:
patent: 5218619 (1993-06-01), Dent
patent: 6693951 (2004-02-01), Gilhousen et al.
patent: 6882692 (2005-04-01), Somayazulu
Kakura, “A path restricted sequence estimator using codeword characteristics”, The International Symposium on Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000, vol. 2, 18-21, Sep. 2000, pp. 1305-1309 vol. 2.
Chang Cheng-Yuan
Chang Yung-Hsien
Chao Hsuan-Ching
Huang Jie-Hau
Lin Hong-Chin
Accton Technology Corporation
Bocure Tesfaldet
Panwalkar Vineeta S.
LandOfFree
Complementary code keying demodulation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Complementary code keying demodulation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complementary code keying demodulation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3540587