A Robust Spatial DPI Suppression Algorithm for GSM-Based Passive Detection System

Jianxin Guo,Lei Jiang,Jinliang Li,Qun Zhang,ZhaoZhao Gao

Wireless Communications, Networking and Mobile Computing（2011）

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摘要

One of the major problems in GSM-based passive detection systems is how to suppress the strong direct path interference (DPI) effectively. According to the features of the GSM downlink signal and the DPI suppression requirement, a spatial filtering algorithm based on the direction of arrival (DOA) information and a least square null constraint optimization is proposed. Theoretical analyses and simulation results show that at least 55dB suppression gain can be achieved by using the proposed algorithm.

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关键词

optimisation,passive radar,doa estimation,spatial filters,cellular radio,direction of arrival,dpi,gsm,robust spatial dpi suppression,least squares approximations,radar detection,direction-of-arrival estimation,passive detection,least square null constraint optimization,interference suppression,passive detection system,spatial filtering algorithm,direct path interference,spatial filtering,interference

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