Blind Adaptive DS-CDMA Receivers with Sliding Window Constant Modulus GSC-RLS Algorithm

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