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In this paper, we propose an innovative generalized spatial modulation (GSM) scheme namely grouping GSM (gGSM) to improve the system performance against the high channel correlation in massive MIMO systems. In the proposed scheme, the transmit antennas are divided into several equal-sized groups, and each group conducts spatial modulation (SM) independently. Two grouping methods, i.e., block grouping...
In this paper, we propose a virtual spatial modulation (VSM) scheme that performs index modulation on the virtual parallel channels resulting from the singular value decomposition of the multi-input-multi-output channels. The VSM scheme conveys information through both the indices of the virtual parallel channels and the $M$ -ary modulated symbols. We derive a closed-form upper bound on the average...
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