Title :
Constrained normalized adaptive filters for CDMA mobile communications
Author :
Apolinario, J.A. ; Werner, S. ; Diniz, P.S.R. ; Laakso, T.I.
Author_Institution :
Helsinki Univ. of Technol., Helsinki, Finland
Abstract :
This work presents an extension of the classical LMS-based Frost algorithm to include both the Normalized LMS (NLMS) and the Binormalized Data-Reusing LMS (BNDR-LMS) algorithms. Two simple versions of these algorithms are derived for the Frost structure. These new algorithms were applied to a DS-CDMA mobile receiver. The results showed a considerable speed up of the convergence rate compared to the LMS Frost.
Keywords :
adaptive filters; code division multiple access; least mean squares methods; mobile communication; spread spectrum communication; CDMA mobile communications; DS-CDMA mobile receiver; Frost structure; binormalized data-reusing LMS; classical LMS-based Frost algorithm; constrained normalized adaptive filters; normalized LMS; Convergence; Least squares approximations; Mobile communication; Multiaccess communication; Optimization; Postal services; Signal processing algorithms;
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4
