Burst-by-burst adaptive decision feedback equalized TCM, TTCM, BICM and BICM-ID

摘要

Decision feedback equalizer (DFE) aided wideband burst-by-burst (BbB) adaptive trellis coded modulation (TCM), turbo trellis coded modulation (TTCM), bit-interleaved coded modulation (BICM) and BICM with iterative decoding (BICM-ID) are proposed and characterised in performance terms over the COST 207 typical urban (TU) wideband fading channel. These schemes are evaluated using a practical modem mode switching regime. System I represents schemes without channel interleaving, while System II invokes channel interleaving over four transmission bursts. A substantially improved bit per symbol (BPS) and bit error rate (BER) performance was achieved by System II in comparison to System I. BbB-adaptive TTCM was found to give the best performance, when aiming for a target BER of below 0.01%.