Design of multilevel semialgebraic LDPC coding for multiple antennas transmission

In this paper, we design a novel multilevel coding (MLC) for multiple antennas transmission system, in which space diversity is achieved by using space-time block codes (STBC). In terms of system performance and implementation, semi-algebraic low-density parity-check (SA-LDPC) codes are proposed as component codes for MLC. The iterative multistage decoding (IMSD) scheme is adopted in system. System performance with ungerboeck partitioning (UP) and block partitioning (BP) for 8PSK is evaluated respectively over flat Rayleigh fading channels. Comparing with STBC, through many simulations, the significant performance improvement is obtained by concatenating the MLC with STBC in wireless channels. Furthermore, it is shown that the proposed transmission scheme outperforms space-time trellis codes (STTC) and concatenated STBC with trellis coded modulation (TCM) under the same signal constellation.