Fast communication: Adaptive step-size widely linear linearly constrained constant modulus algorithm for DS-CDMA receivers in nonstationary interference environments

Authors:
JunSeok Lim;Ki-Young Han;Jaejin Jeon
Affiliations:
Department of Electronics Engineering, Sejong University, 98 Kwangjin Kunja, Seoul 143-747, Republic of Korea;Samsung Electronics Co., Ltd., South Korea;Samsung Electronics Co., Ltd., South Korea
Venue:
Signal Processing
Year:
2007

Citing 6
Cited 1

Adaptive step-size constant modulus algorithm for DS-CDMA receivers in nonstationary environments

Signal Processing
On circularity

IEEE Transactions on Signal Processing
Widely linear estimation with complex data

IEEE Transactions on Signal Processing
Data-aided and blind stochastic gradient algorithms for widely linear MMSE MAI suppression for DS-CDMA

IEEE Transactions on Signal Processing
Conjugate linear filtering

IEEE Transactions on Information Theory
Blind adaptive multiuser detection

IEEE Transactions on Information Theory

Fuzzy-logic tuned constant modulus algorithm and soft decision-directed scheme for blind equalisation

Digital Signal Processing

Quantified Score

Hi-index	0.08

Visualization

Abstract

In this paper, we propose a new adaptive step-size widely linear constant modulus algorithm (CMA) in DS-CDMA systems especially for time-varying interference environment. The widely linear estimation enables CMA to produce better output signal to interference plus noise ratio (SINR) and the adaptive step-size tackles the time-varying interference environment effectively. Simulations have confirmed that the proposed algorithm performs better in a DS-CDMA system by employing a BPSK modulation than other algorithms that do not use widely linear processing.