Robust adaptive interference rejection in DS/FH hybrid system
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摘要: 根据鲁棒估计理论,采用一种基于广义M估计的自适应滤波器消除DS/FH混合扩频系统中的部分带宽干扰,并推导了鲁棒自适应算法.比较了2种M估计中常用的ψ函数的性能:Huber函数(Huber function)、三权重函数(Tri-weight function).Monte Carlo 仿真结果表明,采用鲁棒自适应滤波器的DS/FH系统抗非稳态干扰性能显著提高,且具有拒绝特性的三权重函数性能明显优于Huber函数.Abstract: According to robust estimator theory, an adaptive filter based on generalized M estimation was used to reject partial band interference in DS/FH hybrid communication system, and the robust adaptive algorithm was deduced. The performance of two M estimation functions (Huber function and Tri-weight function) which are widely used in M estimation was also compared. Monte Carlo simulation results indicate that the performance of DS/FH system using robust adaptive filter is improved remarkably in nonstationary interference environment ,and the performance of Tri-weight function excels the Huber function's obviously.
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[1] Milstein L B.Interference rejection techniques in spread spectrum communications[J] Proceeding of the IEEE,1998,76(6):657~671 [2] Ketchum J W, Proakis J G. Adaptive algorithms for estimation and suppressing narrow-band interference in PN spread-spectrum system[J] IEEE Trans on Communications,1982,30(5):913~924 [3] Pouttu A, Jutti J, Kumpumaki T. Adaptive transform domain interference suppression in a hybrid DS/FH system. Proceedings of ISSSTA'98. South Africa:Sun City,1998. 351~355 [4] Pouttu A, Jutti J, Kumpumaki T, et al. Bit pattern matched phase interference suppression in a hybrid DS/FH-system. Milcom'99. NJ:Atlantic City,1999.841~845 [5] 沈福民.自适应信号处理[M] 西安:西安电子科技大学出版社,2001 Shen Fumin. Adaptive signal process[M] Xi'an:Xi'an Electron Technology University Press,2001(in Chinese) [6] Martin R D, Tho mson D J. Robust resistant spectrum estimstion. Proc IEEE, 1982,70(9):1097~1115 [7] 张贤达.现代信号处理[M] 北京:清华大学出版社,1995 Zhang Xianda. Modern signal Process[M] Beijing:Tsinghua University Press,1995(in Chinese) [8] Henttu P, Saarnisaari H, Aromaa S. Interference suppression in DS/FH system using modified two sided adaptive filter. Mlocm'2001. VA:Mclean,2001.1429~1432 [9] Zhang Zhenyou. Robust estimation http://www-sop.inria.fr/robotvis/personnel/zzhang/Publis,1996-02-08 -
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