International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (IJAREEIE)
Smart antenna primarily uses the SDMA-OFDM based architecture of communication. Due to robustness and protection against interference provide by OFDM (Orthogonal Frequency Division Multiplexing). Although high data rate transmission is effectively achieved by using OFDM but detection techniques especially in over-loaded scenario poses many challenging issues. There are many optimization techniques presents for optimal multiuser detection process in SDMA-OFDM system, though each method is suffered from limitations. In these paper two popular evolutionary algorithms such as Particle Swarm Optimization (PSO) hybrid with MMSE technique and Genetic Algorithm (GA) based SDMA-OFDM Multi User Detection (MUD) is hybrid with the MMSE technique.