摘要
本文首先分析了LMS算法在作定点补码运算时,会产生较大误差,并导出了权收敛后的偏差值,该偏差值与LMS算法的收敛系数ν有关。在此基础上,提出了定点补码LMS算法。最后,采用定点补码LMS算法和数字信号处理器TMS32010实现了一个自适应噪声对消系统,并且,给出了几种实验结果。
It is analysed that the well—known LMS algorithm behaves badly in fixed—point complement computations and errors of the mean values of converged weights are also derived in this paper. The errors relate to the convergence coefficient of the LMS algorithm. A fixed—point complement LMS algorithm (FPC—LMS algorithm)is put forward. At last results are presented from computer simulations as well as an actual adaptive noise canceling ystem using FPC—LMS algorithm based on the TMS32010 digital signal prosessor
出处
《信号处理》
CSCD
北大核心
1990年第2期121-128,共8页
Journal of Signal Processing
