Abstract
In this letter, we present a quadrature spatial modulation-assisted full-duplex (QSM-FD) communication scheme for multiple-input multiple-output systems, where transmit and receive antennas are co-located at each node. These antennas can be utilized as either transmit or receive antennas for a symbol duration, which implies that the proposed QSM-FD scheme is implemented with half-duplex antennas. An analog self-interference (SI) cancelation model is exploited to reduce the SI to a desirable level. A maximum likelihood detector is employed that is subject to the residual SI. An upper bound of the average bit error rate of the proposed scheme is also derived. Furthermore, we provide the analytical framework of the ergodic capacity, system throughput, and ergodic spectral efficiency for the proposed scheme. All numerical results are thoroughly verified via Monte-Carlo simulation.