Set-membership adaptive algorithms based on time-varying error bounds for DS-CDMA systems

Author

De Lamare, Rodrigo C. ; Diniz, Paulo S R

Author_Institution

Commun. Group, York Univ.

fYear

2006

fDate

21-24 May 2006

Abstract

This work presents set-membership adaptive algorithms based on time-varying error bounds. The important issue of error bound specification is addressed in a new framework that takes into account parameter estimation dependency, multi-access (MAI) and intersymbol interference (ISI) for DS-CDMA communications. An algorithm for tracking and estimating the interference power is presented and incorporated into the time-varying error bound. Computer simulations show that the algorithms are capable of outperforming previously reported techniques with a smaller number of parameter updates and a reduced risk of overbounding or under bounding

Keywords

adaptive equalisers; code division multiple access; error statistics; filtering theory; intersymbol interference; parameter estimation; spread spectrum communication; DS-CDMA systems; computer simulations; error bound specification; interference power estimation; interference power tracking; intersymbol interference; multiaccess interference; parameter estimation; set-membership adaptive algorithms; time-varying error bounds; Adaptive algorithm; Computer errors; Filtering; Finite impulse response filter; Intersymbol interference; Matched filters; Multiaccess communication; Multiple access interference; Samarium; Time varying systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693372

Filename

1693372