Multiuser Detection for Asynchronous Multicarrier CDMA Using Particle Swarm Optimization
Muhammad Zubair, M. A. S. Choudhry, A. Naveed, I. M. Qureshi · IEICE Transactions on Communications · 2008
Due to the computational complexity of the optimum maximum likelihood detector (OMD) growing exponentially with the number of users, suboptimum techniques have received significant attention. We have proposed the particle swarm optimization (PSO) for the multiuser detection (MUD) in asynchronous multicarrier code division multiple access (MC-CDMA) system. The performance of PSO based MUD is near optimum, while its computational complexity is far less than OMD. Performance of PSO-MUD has also been shown to be better than that of genetic algorithm based MUD (GA-MUD) at practical SNR.