计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (26): 159-161.

• 数据库、信号与信息处理 • 上一篇    下一篇

可变数据重用因子仿射投影算法

彭最亮,李 锋   

  1. 复旦大学 电子工程系,上海 200433
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-09-11 发布日期:2011-09-11

Affine projection algorithm with variable data-reuse factor

PENG Zuiliang,LI Feng   

  1. Department of Electronic Engineering,Fudan University,Shanghai 200433,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-09-11 Published:2011-09-11

摘要: 从修改传统仿射投影算法(Affine Projection Algorithm,APA)的约束条件出发,推导出了一种新的可变数据重用因子仿射投影算法。该算法解决了传统APA算法收敛速度与稳态失调和计量复杂度之间的矛盾,实现了在初始阶段数据重用因子大,收敛后数据重用因子小的目标。仿真结果表明该算法最终达到了高数据重用因子APA的收敛速度和NLMS算法的计算量和稳态失调。

关键词: 仿射投影算法, 可变数据重用因子, 收敛速度, 稳态失调, 计算量

Abstract: Based on the changed constraint condition of Affine Projection Algorithm(APA),a novel APA with variable data-
reuse factor is proposed.The confliction between covergence speed and misalignment or computational complexity is successfully solved.At the beginning of the algorithm a large data-reuse factor is achieved while a small one is achieved after the algorithm has converged.Simulations show the proposed algorithm has as fast convergence speed as APA with high data-reuse factor while its misalignment and computational complexity are as low as NLMS algorithm.

Key words: affine projection algorithm, variable data-reuse factor, convergence speed, misalignment, computational complexity