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Proceedings Paper

Side-lobe interference suppression for DFT filter banks based on improved GSC
Author(s): Guo-lin Li; Tao Li; Cui-hua Lu
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Paper Abstract

In this paper Generalized Side-Lobe Canceller(GSC) is introduced to cancel strong jamming signals from side-lobes of DFT filter banks. For the ith channel, the canceller uses other channels' output to cancel interferefering signals, and places nulls at stop band adaptively, but the length of the canceller' coefficient vector is restricted to 1, so the canceller just cancels strong interferefering signals, with little influence on desired signals in pass band. The algorithms is based on LMS algorithms, but a simplifying method is devised to control the length of coefficient vector, which need no root square and division operations. This method realizes the function of high-order filter banks and especially suited for weak signal detection. Simulations indicate that it reduces computation quantity relative to high-order filter banks but maintains the same performance.

Paper Details

Date Published: 1 October 2011
PDF: 9 pages
Proc. SPIE 8285, International Conference on Graphic and Image Processing (ICGIP 2011), 82856G (1 October 2011); doi: 10.1117/12.913477
Show Author Affiliations
Guo-lin Li, Naval Aeronautics and Astronautics Univ. (China)
Tao Li, Naval Aeronautics and Astronautics Univ. (China)
Cui-hua Lu, Naval Aeronautics and Astronautics Univ. (China)

Published in SPIE Proceedings Vol. 8285:
International Conference on Graphic and Image Processing (ICGIP 2011)
Yi Xie; Yanjun Zheng, Editor(s)

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