自适应波束形成的SARLS算法  

SARLS Algorithm for Adaptive Beamforming

作　　者：夏新仁[1] 尹成友[1] 

机构地区：[1]合肥电子工程学院,安徽合肥230037

出　　处：《无线电通信技术》2008年第2期32-35,共4页Radio Communications Technology

基　　金：国家自然科学基金项目(60671057)

摘　　要：提出了一种改进的递推最小二乘(RLS)算法——子阵异步RLS算法(SARLS)用于自适应波束形成,改进后的算法,在总权矢量的维数为N、子权矢量维数较小时,运算量由O(N2)降到了O(N),并通过实例仿真详细地验证了算法的实用性:该算法在保持对期望信号良好接收的同时,能够很好地抑制到达方向与期望信号不同的干扰信号。In this paper, a subarray asynchronous RLS （SARLS） algorithm is proposed and used in the beamforming of adaptive array. The operational quantity is reduced from 0 （ N^2 ） to 0 （N） by using SARLS algorithm when the dimension of omni-weighting vector is N and that of sub-weighting vector is smaller. The practicability of the algorithm is verified by application instance. While keeping the expected signal being well received,the algorithm can primely suppress interfering signal coming from the direction that is differ from that of expected signal.

关 键 词：CDMA系统 自适应波束形成 予阵异步 RLS算法 

分 类 号：TN927[电子电信—通信与信息系统] TN975[电子电信—信息与通信工程]