Widely linear momentum linearly constrained CMA for CDMA blind multiuser detection

Authors:
Li Guimei;Zhou Yuanjian
Affiliations:
College of Computer and Electronic Engineering, Hunan University of Commerce, Changsha, Hunan, China;Department of Computer and Electronic Engineering, Guangdong Police College, Guangzhou, Guangdong, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

Citing 5
Cited 0

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

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Widely linear estimation with complex data

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Data-aided and blind stochastic gradient algorithms for widely linear MMSE MAI suppression for DS-CDMA

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Blind adaptive multiuser detection

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Abstract

A widely linear momentum linearly constrained constant modulus algorithm for the multi-access interferences (MAI) suppression in direct sequence code division multiple access (DS-CDMA) systems is proposed and analyzed in this paper. The widely linear estimation enables constant modulus algorithm (CMA) to produce better output signal to interference plus noise ratio (SINR) and the momentum fastens the convergence. 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 and momentum.