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We propose a novel scheme for downlink multiuser multiple-inputmultiple-output (MIMO) systems, called dual-layered transmit-receivegeneralized spatial modulation (DL-TR-GSM). The proposed scheme is based on theconcept of dual-layered transmission (DLT) which uses two receive antenna powerlevels instead of receive antenna activation/inactivation to transmit data inthe receive spatial domain. Hence, in order to minimize the bit error rate(BER) for DL-TR-GSM, the optimal ratio between the two power levels isdetermined. To further characterize DL-TR-GSM, we fully derive thecomputational complexity and show a significant computational complexityreduction as well as a required hardware complexity reduction of DL-TR-GSM,compared to a state-of-the-art benchmark scheme. Simulation results confirm theperformance advantages of DL-TR-GSM.

Transmit-Receive Generalized Spatial Modulation Based on Dual-layered MIMO Transmission