Discrete shuffled frog leaping algorithm for multi-user detection in DS-CDMA communication system

To reduce computation complexity of the optimal multi-user detector, an algorithm that employs discrete shuffled frog leaping for the multi-user detection problem (DSFLA-MUD) is proposed. A discrete shuffled frog leaping algorithm is firstly proposed, and then, it is used in multi-user detection to improve the detection performance. Simulation results show that the proposed DSFLA-MUD has significant performance improvement over conventional receivers and previous multi-user detectors based on the genetic algorithm (GA) and particle swarm optimization algorithm (PSO) in terms of convergence, capacity of system and near-far resistance.