Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2004-07-06
2009-10-06
Bullock, Jr., Lewis A (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S290000, C708S300000
Reexamination Certificate
active
07599978
ABSTRACT:
A digital signal, x(n) (where n is an integer), is decimated by determining a signal vector, y(k), of size M by partitioning samples of the digital signal, x(n) according to sampling phases of the samples. The signal vector, y(k), is projected onto an N-dimensional sub-space, wherein N is an integer and N<M. Where the digital signal is generated by means of oversampling, it is possible to perform decimation in a way that optimizes the signal-to-noise ratio (SNR) of the decimated signal by suitably determining the sub-space onto which the signal vector will be projected.
REFERENCES:
patent: 4893316 (1990-01-01), Janc et al.
patent: 4989221 (1991-01-01), Qureshi et al.
patent: 5025404 (1991-06-01), Janssen et al.
patent: 5483555 (1996-01-01), Hattori
patent: 5493297 (1996-02-01), Nguyen et al.
patent: 5598159 (1997-01-01), Hein
patent: 6134569 (2000-10-01), Kot
patent: 6178186 (2001-01-01), Baker et al.
patent: 6531969 (2003-03-01), Chu
patent: 2003/0108028 (2003-06-01), Brunner et al.
patent: 10051144 (2002-04-01), None
Stoica, P., Nordsjo, A.E. “Subspace-based frequency estimation in the presence of moving-average noise using decimation”, vol. 63, pp. 211-220.Signal Processing(Netherlands), Dec. 1997, Elsevier for EURASIP, Netherlands.
Morren, G. et al. “Decimative subspace-based parameter estimation techniques”, vol. 83, pp. 1025-1033.Signal Processing(Netherlands), May 2003, Elsevier for EURASIP, Netherlands.
E. Lindskog, C. Tidestav, “Reduced Rank Channel Estimation”,IEEE Proc. VTC'99, pp. 1126-1130, May 17-19, 1999 (Houston, TX).
A.F. Naguib, et al., “Adaptive Channel Equalization for TDMA Digital Cellular Communications Using Antenna Arrays”,Proceedings of ICASSP'94, vol. 4, pp. 101-104, 1994 (Stanford, CA).
Bullock, Jr. Lewis A
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
Yaary Michael
LandOfFree
Digital signal decimation by subspace projection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital signal decimation by subspace projection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signal decimation by subspace projection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4131366