Near Optimum Detector for DS-CDMA System Using Particle Swarm Optimization
M. A. S. CHOUDHRY, Muhammad Zubair, A. Naveed, I. M. Qureshi · IEICE Transactions on Communications · 2007
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.