Title :
A Robust Spatial DPI Suppression Algorithm for GSM-Based Passive Detection System
Author :
Guo, Jianxin ; Jiang, Lei ; Li, Jinliang ; Zhang, Qun ; Gao, Zhaozhao
Author_Institution :
Telecommun. Eng. Inst., Air Force Eng. Univ., Xi´´an, China
Abstract :
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.
Keywords :
cellular radio; direction-of-arrival estimation; interference suppression; least squares approximations; optimisation; passive radar; radar detection; spatial filters; DOA estimation; GSM; direct path interference; direction of arrival; least square null constraint optimization; passive detection system; robust spatial DPI suppression; spatial filtering algorithm; Arrays; Delay; GSM; Interference; Passive radar; Receivers;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040116
