Bit Interleaved Coded Multiple Beamforming to Achieve Full Diversity and Maximum Spatial Multiplexing

This presentation introduces bit interleaved coded multiple beamforming (BICMB). The paper also shows that with the inclusion of BICM to the system, one actually does not need to lose the diversity order with multiple beamforming even when all the subchannels are used. BICMB achieves full diversity order of NM, and full spatial multiplexing order of min(N, M) for a system with N transmit and M receive antennas over Rayleigh flat fading channels. A design criteria for the interleaver is provided which guarantee full diversity and full spatial multiplexing. If there is frequency selectivity in the channel, then BICMB is combined with OFDM in order to combat intersymbol interference (ISI). BICMB-OFDM achieves full diversity order of NML and full spatial multiplexing order of min(N, M) for a system with N transmit and M receive antennas over L-tap frequency selective channels, when an appropriate convolutional code is used