Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors

Details Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors

2010-12-21

arxiv.org/abs/1012.4824v1

Computer Science

Artificial Intelligence

21 pages, 15 figures, 4 tables, full paper

Scientific paper

In this paper, the uplink direct sequence code division multiple access (DS-CDMA) multiuser detection problem (MuD) is studied into heuristic perspective, named particle swarm optimization (PSO). Regarding different system improvements for future technologies, such as high-order modulation and diversity exploitation, a complete parameter optimization procedure for the PSO applied to MuD problem is provided, which represents the major contribution of this paper. Furthermore, the performance of the PSO-MuD is briefly analyzed via Monte-Carlo simulations. Simulation results show that, after convergence, the performance reached by the PSO-MuD is much better than the conventional detector, and somewhat close to the single user bound (SuB). Rayleigh flat channel is initially considered, but the results are further extend to diversity (time and spatial) channels.

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