Fully generalised spatial modulation

Abstract

This paper introduces a novel multiple-input-multiple-output (MIMO) modulation technique named fully-generalised spatial modulation (F-GSM). The proposed F-GSM vanquishes the pivotal criticism of the conventional spatial modulation (SM) and generalised spatial modulation (GSM) techniques which constraints the data rate increment to be proportionated with the base-two logarithm of the number of the transmit antennas (N t ). This logarithmical proportion regrettably, makes the improvement in the data rate of SM/GSM is not feasible compared to the increment in the number of transmit antennas. However, the proposed F-GSM achievable data rate is linearly proportional with N t . Thus, the proposed F-GSM achieves a higher data rate with lower number of N t compared to the conventional SM and GSM as well. The average bit error rate (ABER) performance and the computational complexity of the proposed F-GSM are tested reference to the conventional GSM technique at different spectral efficiency and with different number of N t . Simulation results corroborate the surpasses of the proposed F-GSM as it provides a superior enhancement in both BER performance and achievable data rate along with a reasonable computational complexity compared to the conventional GSM.