Quadrature spatial modulation‐aided single‐input multiple‐output‐media‐based modulation

Abstract

Summary Single‐input multiple‐output media‐based modulation (SIMO‐MBM) improves the limitation of single‐input multiple‐output (SIMO) systems by minimizing the required number of antennas to achieve a high data rate and enhanced error performance. In this paper, we employ the quadrature dimension of the spatial constellation by decomposing the amplitude/phase modulation (APM) symbol into real and imaginary components similar to quadrature spatial modulation (QSM) to improve the overall error performance of the conventional SIMO‐MBM and to achieve a higher data rate. The average bit error probability of the proposed scheme is formulated using a lower bound approach and validated by the Monte Carlo (MC) simulation results obtained. Furthermore, the effect of the suboptimal mirror activation pattern selection using channel amplitude coupled with antenna correlatio n is examined for the proposed system. The MC simulation results achieved demonstrate a substantial improvement of 3.5 dB at 10 b/s/Hz with m rf = 2 and 7 dB at 12 b/s/Hz with m rf = 4 over the conventional SIMO‐MBM scheme.