Media-based single-input multiple-output quadrature spatial modulation with imperfect channel estimation

Abstract

This article examines how the QSM-MBM-SIMO system's performance is affected by Gaussian imperfect channel estimation (IChE). An analytical and a closed-form expressions for the generic QSM system's pair-wise error probability (PEP) are utilized while calculating a precise Lower bound for the Average Bit Error Probability (ABEP) over Rayleigh fading. Computing the effect of channel estimation errors (ChEE) on system functionality yields analytical results. The accuracy of the lower bound-based analysis of the scheme proposed is demonstrated by the results of Monte Carlo simulation (MCS). The MCS results of the proposed scheme demonstrate signal-to-noise ratio (SNR) gain of approximately 1.5 dB at a BER of 10−5 when compared to the SIMO-MBM scheme with perfect channel estimation. Furthermore, when compared to perfect channel estimation (PChE), we discovered a 2 dB loss in coding gains caused by ChEE.

Keywords

• Channel estimation errors
• QSM
• Coding gain loss
• Media based modulation