Fully Quadrature Spatial Modulation Performance with Imperfect Channel Information

Abstract

Abstract“Quadrature spatial modulation (QSM)” uses the in-phase and quadrature components to convey the information, which improves the data rate of the system. A fully QSM (F-QSM) scheme is developed to increase the spectral efficiency (SE) of QSM. The SE of the most space modulation techniques (SMTs) is restricted to being logarithmic proportional to number of transmitting antennas. F-QSM scheme uses a novel transmission method to provide a linear proportionality between the SE and number of transmitting antennas. This paper presents the “bit error rate (BER)” performance of F-QSM under imperfect channel conditions and compares the F-QSM scheme with various SMTs. We use maximum-likelihood (ML) detection approach to evaluate the BER of F-QSM and compares it with the QSM scheme. Additionally, it compares the computational complexity of the F-QSM to the RC-mGQSM.KeywordsSMQSMF-QSMImperfect channel