An artificial immune system algorithm for CDMA multiuser detection over multi-path channels

Based on the Antibody Clonal Selection Theory of immunology, we put forward a novel clonal selection algorithm for multiuser detection in Code-division Multiple-access Systems. By using the clonal selection operator, the new algorithm can carry out the global search and the local search in many directions rather than one direction around the same individual simultaneously. After discussing the main characters of the new algorithm, especially the convergence and complexity, the performance of the proposed receiver, named by CAMUD, is evaluated via computer simulations and compared to that of other suboptimal schemes as well as to that of Optimal Multiuser detector (OMD) and conventional detector in CDMA systems over Multi-Path Channels. When compared with the OMD scheme, the CAMUD is capable of reducing the computational complexity significantly. On the other hand, when compared with standard genetic algorithm and improved genetic algorithm, theoretical analysis and Monte Carlo simulat...

• Type: Conference
• Year: 2005
• Where: GECCO
• Authors: Maoguo Gong, Ling Wang, Licheng Jiao, Haifeng Du
• Keywords: Clonal Selection, Code-division Multiple-access Systems, GECCO 2005, Genetic Algorithm