Bit-interleaved coded spatial modulation

We address coded spatial modulation (CSM) and present a novel approach denoted as bit-interleaved coded spatial modulation (BICSM) with iterative demodulation/decoding. The proposed transceiver architecture alleviates some drawbacks of the previously proposed CSM systems, such as being limited to a particular class of trellis codes or being effective only in limited channel scenarios. We specifically address the performance of BICSM over correlated Rayleigh and Rician fading channels and provide a general framework for the error performance analysis. Simulation results illustrate that BICSM provides not only significant performance improvements against channel fading in comparison to other CSM approaches but also higher robustness against antenna correlation effects.