TRANSMIT ANTENNA SELECTION SCHEMES FOR DOUBLE SPATIAL MODULATION

(Received: 3-Sep-2019, Revised: 22-Oct-2019 , Accepted: 6-Nov-2019)
Double spatial modulation (DSM) is a transmission technique which has been recently proposed for multiple- input multiple-output (MIMO) communication systems. DSM has a higher spectral efficiency compared with classical spatial modulation (SM), as it doubles the number of active transmit antennas. In this paper, transmit antenna selection (TAS) is applied to DSM in order to enhance the bit error rate (BER) performance. In particular, we integrate two sub-optimal TAS algorithms to DSM; namely, capacity-optimized antenna selection (COAS) and antenna selection based on amplitude and antenna correlation (A-C-AS). Simulation results of these two algorithms are presented and compared with the optimal Euclidean distance-optimized antenna selection (EDAS) using MATLAB software. Our results show a complexity-performance trade-off. Although there is a negligible loss of BER, our algorithms are much less complex than EDAS.
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