Spread spectrum method with elimination of sub-bands

Details Spread spectrum method with elimination of sub-bands Spread spectrum method with elimination of sub-bands

2011-08-16

2011-08-16

Malzahn, David H (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

08001169

ABSTRACT:
A spread spectrum method for a digital input signal (x(n)), comprising the following steps: coefficients of a reversible digital periodical linear filter are selected in such a way that the spectrum of the input signal (x(n)) is spread in order to occupy a spread frequency band (B) with the exception of at least one eliminated frequency sub-band (B′), included in a spread frequency band, and the input signal is processed via the digital periodical linear filter in such a way as to obtain a spread spectrum output signal (y(n)).

REFERENCES:
patent: 7430257 (2008-09-01), Shattil
patent: 7593449 (2009-09-01), Shattil
patent: 2002/0196839 (2002-12-01), Hunton
patent: 2004/0264977 (2004-12-01), Yap et al.
patent: 2007/0211786 (2007-09-01), Shattil
patent: 2009/0110033 (2009-04-01), Shattil
R. Ishii and M. Kakishita, A Design Method for a Periodically Time-Varying Digital Filter for Spectrum Scrambling, IEEE Transactions on Acoustic and Signal Processing, Jul. 1990, pp. 1219-1222, vol. 38, No. 7.
W. Chauvet et al., Design of Orthogonal LPTV filters: Application to spread spectrum multiple access, IEEE, May 17, 2004, pp. 645-648, vol. 2.
W. Chauvet et al., Characterization of a set of invertible LPTV filters using circulant matrices, IEEE, Apr. 6, 2003, pp. VI45-VI-48, vol. 1.

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