Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Patent
1997-01-21
2000-07-04
Chin, Wellington
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
455307, 455337, 4552261, 342 13, H04B 110
Patent
active
060850779
ABSTRACT:
The present invention documents a digital channelized receiver for signal intercept applications. A hardware efficient implementation of a uniform filter bank in which the number of filters, K, is greater than the decimation factor, M, is provided. By optimizing the filter bank frequency response, in conjunction with K and M, the proposed invention allows a simple channel arbitration logic to be implemented. In addition, the present invention provides reliable instantaneous frequency measurements and parameter estimates across the desired frequency range while reducing the data processing speed requirements by a factor of M.
REFERENCES:
patent: 4547727 (1985-10-01), Tsui et al.
patent: 5499391 (1996-03-01), Tsui
patent: 5535240 (1996-07-01), Carney et al.
patent: 5606575 (1997-02-01), Williams
L.R. Rabiner, R.E. Crochiere "Multirate Digital Signal Processing" Prentiss Hall, Englewood Cliffs, NJ, 1983.
Fields Timothy W.
Sharpin David L.
Zahirniak Daniel R.
Chin Wellington
Sobutka Philip J.
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