Fastest-Known Maximum-Likelihood Decoding of Quasi-Orthogonal STBCs with QAM Signals

@article{Kundu2013FastestKnownMD,
  title={Fastest-Known Maximum-Likelihood Decoding of Quasi-Orthogonal STBCs with QAM Signals},
  author={Sandipan Kundu and Weifeng Su and Dimitris A. Pados and Michael J. Medley},
  journal={IEEE Wireless Communications Letters},
  year={2013},
  volume={2},
  pages={38-41}
}
We present a maximum-likelihood (ML) decoder with the lowest computational complexity known to-date for full-diversity, arbitrary size Quasi-Orthogonal Space-Time Block Codes (QO-STBCs) with symbols from square or rectangular quadrature amplitude modulation (QAM) constellations. We start with the formulation of an explicit joint two-complex-symbol decoder for general QO-STBCs with arbitrary complex symbols and then derive the proposed ML decoder for QO-STBCs with QAM symbols. The complexity… CONTINUE READING