Antenna Selection in Spatial Modulation Systems
Novel transmit antenna selection techniques are conceived for Spatial Modulation (SM) systems and their Symbol Error Rate (SER) performance is investigated. Specifically, low-complexity Euclidean Distance optimized Antenna Selection (EDAS) and Capacity Optimized Antenna Selection (COAS) are studied. It is observed that the COAS scheme gives a better SER performance than the EDAS scheme. The authors show that the proposed antenna selection based SM systems are capable of attaining a significant gain in Signal-to-Noise Ratio (SNR) compared to conventional SM systems, and also outperform the conventional MIMO systems employing antenna selection at both low and medium SNRs.