Genetic algorithm assisted multiuser detection for asynchronous multicarrier CDMA

Abstract

In this contribution a novel genetic algorithm (GA) based multiuser detection (MUD) aided multicarrier code-division multiple-access (MC CDMA) scheme was investigated in the context of frequency-selective Rayleigh fading channels. We considered four different detection strategies in our performance comparisons. Furthermore, turbo coding was invoked for the sake of performance enhancement and -surprisingly-for further complexity reduction. The simulation results showed that the GA assisted MUD was capable of significantly reducing the complexity of Verdu's optimum MUD without significantly degrading the achievable performance.