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Near Optimum Detector for DS-CDMA System Using Particle Swarm Optimization
Muhammad A. S. CHOUDHRY Muhammad ZUBAIR Aqdas NAVEED Ijaz M. QURESHI
Publication
IEICE TRANSACTIONS on Communications
Vol.E90-B
No.11
pp.3278-3282 Publication Date: 2007/11/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.11.3278 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: direct sequence code-division multiple access, particle swarm optimization, multiuser detection,
Full Text: PDF(188.1KB)>>
Summary:
The computational complexity of the optimum maximum likelihood detector (OMLD) does not allow its utility for multi-user detection (MUD) in code division multiple access (CDMA) systems. As proposed in this letter, particle swarm optimization (PSO) with soft decision offers a much more efficient option with few parameters to be adjusted, flexibility to implement, that gives a much faster convergence compared to OMLD. It outperforms the conventional detector, the genetic algorithm approach and the standard suboptimal detectors considered in the literature.
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