A New Scheme Combining Space-time Bit Interleave Coded Modulation with Phase Sweeping

A phase-sweeping space-time bit interleaved coded modulation (PS-ST-BICM) is presented. By expanding the dimensions of sweeping matrix we achieve the correlation between the adjacent code matrices, and further time diversity is realized, and by further time diversity higher diversity gain is realized which effectively avoid possible burst errors in block fading channels. The optimum criterion of the rotation matrix to maximize both diversity and coding gain is presented. And we also describe the construction of an interleaver that optimizes the total diversity order for a given error-correcting code. Then the Singleton bound, channel capacity and BER performances are theoretically analyzed. The simulation results prove that the performance of the new scheme is improved greatly in the Rayleigh block fading channels.