Side-Lobe Interference Suppression for DFT Filter Banks based on Improved GSC

摘要：

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 highorder 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.

关键词： Electronic warfare receiver Filter banks Interference suppression Generalized Side-Lobe Canceller LMS algorithms

作者: Li Guo-lin Li Tao Lu Cui-hua

作者单位: Naval Aeronautics and Astronautics University Yantai, China

会议类型: 国际会议

会议名称: 2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)

会议地点: 长沙

会议语种:英文

页码: 368-372

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）