Title :
Blind Adaptive DS-CDMA Receivers with Sliding Window Constant Modulus GSC-RLS Algorithm
Author :
Shiunn-Jang Chern ; Sun, Chun-Hung ; Chang, Chih-Chi
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung
Abstract :
The adaptive filtering algorithms, based on the sliding window linear constrained recursive least squares (SW LC-RLS) approach, is very attractive to a violent changing environment. In this paper we propose a novel SW constant modulus RLS (SW CM-RLS) algorithm, based on the Min/max criterion, to deal with the narrowband interference (NBI) for DS-CDMA system over multipath channels. For reducing the system complexity, the generalized sidelobes canceller (GSC) structure is employed, and is referred to as the SW CM-GSC-RLS algorithm. The aim of the SW CM-GSC-RLS algorithm is used to alleviate the effect of NBI, and suppressing the MAI and ISI, simultaneously, thus achieving the desired performance
Keywords :
adaptive filters; code division multiple access; interference suppression; intersymbol interference; least squares approximations; minimax techniques; multipath channels; radio receivers; recursive estimation; spread spectrum communication; ISI suppression; MAI suppression; adaptive filtering algorithms; blind adaptive DS-CDMA receivers; generalized sidelobes canceller; min-max criterion; multipath channels; narrowband interference; sliding window constant modulus GSC-RLS algorithm; sliding window linear constrained recursive least squares; Adaptive filters; Filtering algorithms; Interference constraints; Intersymbol interference; Least squares methods; Multiaccess communication; Multipath channels; Multiple access interference; Narrowband; Resonance light scattering;
Conference_Titel :
Intelligent Signal Processing and Communications, 2006. ISPACS '06. International Symposium on
Conference_Location :
Yonago
Print_ISBN :
0-7803-9732-0
Electronic_ISBN :
0-7803-9733-9
DOI :
10.1109/ISPACS.2006.364803