The performance of TCM 16-QAM with equalization, diversity and slow frequency hopping for wideband mobile communications

The use of high level trellis-coded modulation such as TCM 16-QAM, with equalization, diversity, interleaving and slow frequency hopping is investigated for wideband mobile communications. The symbol error rate (SER) performance of those systems in presence of intersymbol interference (ISI) and Rayleigh fading is evaluated by theoretical analysis and computer simulation. Several schemes of combining equalizers with diversity are evaluated by computer simulations. It shows that by choosing a proper interleaving size, number of the frequency hopping and the combining scheme of equalization and space diversity, the proposed system gives considerable performance improvement and can cope with the frequency selective multipath fading in wideband mobile communication systems.