TCM with preswitching diversity in slow Rayleigh fading forward link

The performance of trellis-coded modulation with finite interleaver size degrades in a very slow fading channel. In this case antenna diversity is effective. In personal communication systems, however, the limited size and complexity of the handset make diversity implementation at the handset difficult. The authors propose a scheme for obtaining interleaving effects by switching base station antennas in a forward link, without additional software or hardware in a small handset. Computer simulation shows that this scheme has significant performance gain in a slow fading forward link