PERFORMANCE OF HIGH RATE SPACE-TIME TRELLIS CODED MODULATION IN FADING CHANNELS
Sokoya Oludare. Ayodeji · ResearchSpace (University of KwaZulu-Natal) · 2005
Future wireless communication systems promise to offer a variety of multimedia services which require reliable transmission at high data rates over wireless links.Multiple input multiple output (MIMO) systems have received a great deal of attention because they provide very high data rates for such links.Theoretical studies have shown that the quality provided by MIMO systems can be increased by using space-time codes.Space-time codes combine both space (antenna) and time diversity in the transmitter to increase the efficiency of MIMO system.The three primary approaches, layered spacetime architecture, space-time trellis coding (STTC) and space-time block coding (STBC) represent a way to investigate transmitter-based signal processing for diversity exploitation and interference suppression.The advantages of STBC (i.e.low decoding complexity) and STTC (i.e.TCM encoder structure) can be used to design a high rate space-time trellis coded modulation (HR-STTCM).Most space-time codes designs are based on the assumption of perfect channel state