Space-time IQ-interleaved TCM and TTCM for AWGN and Rayleigh fading channels

Space-time block coded inphase-quadrature phase (IQ)-interleaved trellis coded modulation (TCM) and turbo TCM (TTCM) schemes are proposed, which are capable of quadrupling the diversity order of conventional symbol-interleaved TCM and TTCM schemes. The increased diversity order of the proposed schemes provides significant coding gains, when communicating over non-dispersive Rayleigh fading channels without compromising the coding gain achievable over Gaussian channels.