Statistical Physics of Information Processing in Mobile Communications

Recent studies have revealed that statistical mechanics provides powerful concepts and tools for analyzing the user detection problem of the code-division multiple-access (CDMA) communication, which is increasingly used in the third-generation mobile communication systems. The basic and some recent results on performance analysis of CDMA multiuser detection problem using the replica method are reviewed, which yield theoretical bounds on the performance of the optimum multiuser detector under various conditions. The statistical-neurodynamical theory of CDMA parallel interference cancellers (PICs) are also reviewed, which enables us to predict detection dynamics of conventional PICs and to derive novel PIC algorithms with better properties.