Abstract
Spatial modulation (SM) is proposed to both achieve a high energy efficiency (EE) and low implementation complexity, which attracts a lot of academic interests. Generalised SM (GenSM) is proposed to achieve a higher spectral efficiency (SE) than traditional SM system, and there are many researches about detection in GenSM system. In this paper, we propose a novel low-complexity detection algorithm for GenSM system with transmit antenna (TA) correlation, which is based on the polynomial expansion and zero forcing (ZF) equalization algorithm. Our proposed algorithm has a lower computational complexity than traditional ZF detection algorithm, and this computational complexity can be adjusted to achieve a tradeoff with bit error rate (BER) performance. Monte Carlo simulations verify that our proposed low-complexity ZF (LC-ZF) detection algorithm also has a better BER performance than maximum ratio (MR) detection algorithm.
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