Title :
LMS adaptive filtering with /spl Sigma//spl Delta/ modulated input signals
Author :
Pfann, Eugen ; Stewart, Robert W.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
fDate :
4/1/1998 12:00:00 AM
Abstract :
A new multibit multiplier free structure for a least mean squares (LMS) algorithm with /spl Sigma//spl Delta/ modulated input signals is proposed. An additional filter in the error path is necessary to allow adaptation of the filter. Simulation results for system identification demonstrate that the performance of described design is comparable to the performance of an equivalent pulse code modulated (PCM) system.
Keywords :
adaptive filters; adaptive signal processing; filtering theory; identification; least mean squares methods; sigma-delta modulation; signal sampling; /spl Sigma//spl Delta/ modulated input signals; LMS adaptive filtering; PCM; error path; filter adaptation; filter design; least mean squares algorithm; multibit multiplier free structure; oversampled rate; performance; pulse code modulated system; simulation results; system identification; Adaptive filters; Baseband; Delay; Delta modulation; Finite impulse response filter; Least squares approximation; Phase change materials; Pulse modulation; Signal processing; Signal processing algorithms;
Journal_Title :
Signal Processing Letters, IEEE
