Cross-antenna decoding for the LDPC coded space-time system
Jun Wang, Hui Deng, Pengyu He · 2006
In this paper, we propose a new structure of LDPC coded space time system and a corresponding decoding algorithm named CAMP (cross antenna massage passing), which updates extrinsic information by calculating other antennas' a posteriori probability and passing it to the current decoding antenna to cancel the interference introduced by symbols from other antennas. Considering a point to point MIMO channel with t N transmit antennas and r N receive antennas, the fading type is assumed to be Rayleigh flat fading. The transmitter converts every t mN × serial source bits into t N