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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