Bit-interleaved coded OFDM with signal space diversity: Subcarrier grouping and rotation matrix design

The application of bit-interleaved coded modulation and iterative decoding (BICM-ID) in orthogonal-frequency-division-multiplexing (OFDM) systems with signal space diversity (SSD) over frequency-selective Rayleigh-fading channels is investigated. The results have shown that the best error performance of BICM-ID for OFDM with SSD can be achieved with low-complexity receiver, using optimal grouping and rotation matrix.