CDMA通信信号的波达方向估计  

Direction of Arrival Estimation for CDMA Communication Signal

作　　者：岳晋[1] 冯文江[1] 侯剑辉[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030

出　　处：《重庆大学学报（自然科学版）》2004年第12期86-90,共5页Journal of Chongqing University

基　　金：重庆市应用基础研究基金资助项目(2002-7367)

摘　　要：通信信号或雷达信号的波达方向估计常采用MUSIC算法,但是传统的MUSIC算法不能适用于相关信号处理。针对CDMA通信信号的DOA估计问题,采用一种空时二维平滑处理算法,在空间平滑技术的基础上,结合时间平滑处理。该算法在确保估计准确性的前提下能有效减小计算量,更适合实时处理。仿真结果验证了这种改进算法的有效性。MUSIC algorithm is often applied in direction of arrival estimation of communication signal or radar signal. But the traditional MUSIC algorithm is not applicable in the presence of the correlational signals. Combining with time average processing, an algotithm of two-dimensional space-time average is suggested on the base of space average technic especially for the DOA estimation of CDMA communication signal. A detaild analysis and a conclusion about this improved algorithm is presented. Ensuring the accurary of the estimation an efficient decrease in quantity of operation is achieved with the algorithm, so it is more suitable for real-time processing. The efficiency of the improved algorithm is attested by the emulating results.

关 键 词：MUSIC算法 空时二维平滑 波达方向估计 码分多址 

分 类 号：TN929.533[电子电信—通信与信息系统]