Serial concatenated MSK modulated space-time block coding

In this article, we propose iterative noncoherent (without knowledge of fading phase) and non-CSI (without knowledge of fading phase and amplitude) decoding for space-time block coding (STBC) by employing MSK modulation instead of commonly used PSK. Beyond a simple replacement, MSK modulated STBC (MSK-STBC) reduces the smallest resolvable time interval from STBC code duration, necessary for differential space-time coding (DST), to MSK symbol duration, and thus presents consistent and enhanced system performance in fast fading channels. The efficiency of our schemes is validated and illustrated via theoretical analysis and numerical simulations.