基于IQRD-RLS的自适应均衡算法在DS-SS系统的应用研究  

Performace of adaptive equalization algorithm based on IQRD-RLS in DS-SS systems

作　　者：李明[1] 黄华[1] 夏建刚[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《微型机与应用》2011年第15期34-37,共4页Microcomputer & Its Applications

摘　　要：提出一种基于逆QR分解的RLS自适应算法(IQRD-RLS),该算法能有效降低计算复杂度、改善矩阵条件数,具有比基于相关矩阵的最小二乘算法有更好的数值稳定性。通过用Matlab仿真结果表明,逆QR分解方法避免了RLS问题的不准确求解问题,并且很容易随时检查变换信息矩阵的正定性。This paper proposes a more efficient RLS inverse QR decomposition adaptive algorithm （IQRD-RLS） which can effectively reduce the computational complexity and improve the matrix condition number. It has better numerical stability than the least-squares algorithm based on the correlation matrix. The Matlab simulation results show that the IQRD-RLS method can avoid the issue of solving the problem of inaccurately and can change information easily at any time to check the positive definite matrix.

关 键 词：逆QR分解 自适应滤波算法 递归最小二乘法 直接序列扩频系统 

分 类 号：TN914.42[电子电信—通信与信息系统]