Design of Low-Density Parity-Check Codes for Multi-Antenna Modulation and Detection
01 April 2004
A coding and modulation scheme is studied for transmitting information over multi-input, multi-output (MIMO) channels. The sceme combines the MIMO detector and the variable node decoder of a low-density parity check (LDPC) code. Good LDPC degree sequences are designed by using extrinsic information transfer (EXIT) charts.
The combined coding/modulation method performs within about 1dB of MIMO capacity and outperforms turbo (parallel concatenated) coded modulation by a wide margin when when there are more transmit than receive antennas.
