Overcoming co-channel interference in TDMA systems using SOM equalizer

Abstract

This paper studies the co-channel interference (CCI) problem for time-division-multiple-access (TDMA) cellular mobile communication system with burst transmission. We present a method using self-organizing-map (SOM) to overcome CCI for such a system. The SOM is realized as a classification equalizer with a decision feedback adaptive filter. An extremely small number of unique words (UWs) are utilized to initialize the SOM equalizer. Simulation results show that the bit error rate (BER) of our proposed method is much better than that of the recently proposed nearest neighbor classification equalizer.