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Proceedings Paper

New approach for interference excision in spread spectrum using time-frequency distributions
Author(s): Moeness G. Amin; Gopal Venkatesan; Steve Tyler
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Paper Abstract

The capability of the time-frequency distributions (TFDs) to properly represent a single as well as multiple component signals in time and frequency permits the application of a new approach for interference excision in spread spectrum communication systems. In this paper, the instantaneous frequency estimate from the TFD is used to construct a finite impulse response filter which substantially reduces the interference power with a minimum possible distortion of the desired signal. The proposed technique is therefore a case of open loop adaptive filtering. Three- and five-coefficient zero phase excision filters are considered. Closed form expressions of the improvement of SNR at the receiver correlator output using the TFD-based adaptive filtering are derived.

Paper Details

Date Published: 7 June 1995
PDF: 10 pages
Proc. SPIE 2563, Advanced Signal Processing Algorithms, (7 June 1995); doi: 10.1117/12.211425
Show Author Affiliations
Moeness G. Amin, Villanova Univ. (United States)
Gopal Venkatesan, Villanova Univ. (United States)
Steve Tyler, Rome Lab. (United States)


Published in SPIE Proceedings Vol. 2563:
Advanced Signal Processing Algorithms
Franklin T. Luk, Editor(s)

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