基于约束恒模准则的盲自适应多址干扰抑制算法  

A blind adaptive algorithm for multi-access interference suppression based on constrained constant modulus criterion

作　　者：曾召华[1] 刘贵忠[2] 赵建平[3] 

机构地区：[1]西安科技学院通信系,陕西西安710054 [2]西安交通大学,陕西西安710049 [3]中兴通讯股份有限公司西安研究所,陕西西安710065

出　　处：《通信学报》2004年第4期138-143,共6页Journal on Communications

基　　金：陕西省自然科学基金资助项目(2003F13);陕西省教委自然科学专项基金资助项目(03jk168)

摘　　要：为克服基于恒模的盲自适应多址干扰抑制算法中,由于估计幅值选择不合适而造成算法不收敛的缺点,本文提出了几种自适应方法来跟踪目标用户的幅度,从而保证了算法的全局收敛,并提高了干扰抑制能力。计算机仿真结果证明了该方法的有效性与可行性。In order to overcome no convergent drawback of the weigh vector due to choose the dispersion constant inaccurately in the blind adaptive constant modulus(CM) algorithm for multi-access interference(MAI) suppression, a few kinds of adaptive methods to track the desire user抯 amplitude are proposed in this paper. So the algorithm has the global convergence and its performance of multi-access interference suppression attains the best. Computer simulation results show that it is effective and feasible method.

关 键 词：盲多址干扰抑制 约束恒模准则 幅度跟踪 

分 类 号：TN929.5[电子电信—通信与信息系统]