Blind Multiuser Detection in Frequency Domain for MC-CDMA Systems Using Particle Swarm Optimization

Authors:
Jyh-Hrong Wen;Chuan-Wang Chang;Ho-Lung Hung
Affiliations:
Department of Electrical Engineering, Tunghai University, Taichung City, Taiwan, ROC;Department of Electrical Engineering, National Chung Cheng University, Chia-Yi City, Taiwan and Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan, ROC;Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan, ROC
Venue:
Wireless Personal Communications: An International Journal
Year:
2010

Citing 11
Cited 2

Multiuser Detection

Multiuser Detection
Single and Multi-Carrier CDMA: Multi-User Detection, Space-Time Spreading, Synchronisation and Standards

Single and Multi-Carrier CDMA: Multi-User Detection, Space-Time Spreading, Synchronisation and Standards
Adaptive MC-CDMA receiver with constrained constant modulus IQRD-RLS algorithm for MAI suppression

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Performance analysis of the linearly constrained constant modulus algorithm-based multiuser detector

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A two-stage CMA-based receiver for blind joint equalization and multiuser detection in high data-rate DS-CDMA systems

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The particle swarm - explosion, stability, and convergence in amultidimensional complex space

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Self-organizing hierarchical particle swarm optimizer with time-varying acceleration coefficients

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Blind adaptive multiuser detection

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Overview of multicarrier CDMA

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Multicarrier DS-CDMA: a multiple access scheme for ubiquitous broadband wireless communications

IEEE Communications Magazine
MIMO MC-CDMA communications for future cellular systems

IEEE Communications Magazine

Metaheuristic Channel Assignment in DVB-T Networks in Conformity with Digital Dividend Requirements

Wireless Personal Communications: An International Journal
Frequency-Domain Equalization for Orthogonal and Quasi-Orthogonal STBCs over Frequency-Selective Wireless and Power-Line Channels

Wireless Personal Communications: An International Journal

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Abstract

In digital communication systems, the constant modulus algorithm (CMA) for blind multiuser detector has some disadvantage such as slow convergence speed and weight phase rotation. In this paper, we put forward a novel receiver, which combines CMA blind adaptive multiuser detection and particle swarm optimization (PSO) technique in frequency domain for multi-carrier direct sequence code division multiple access (MC DS-CDMA) systems. By this approach we present an adaptive multistage structure based on PSO technique. In this structure, the weights are obtained by PSO technique between the received signal and its estimate through a CMA. The resulting weights contain reliability information for the hard decisions made in the previous stage. The simulation results show that BER performance of the PSO-based CMA blind multiuser detector is superior to that of steepest decreasing constant modulus algorithm (SDCMA), linearly constrained constant modulus algorithm (LCCMA), CMA based multiuser detection and is worthy due to its significant detection performance to achieve desirable improvement in convergence speed and tractability.