Multiple Antenna Selection and Successive Signal Detection for SM-based IRS-aided Communication

TL;DR

This paper introduces a novel IRS-aided multi-antenna selection and successive detection scheme that enhances spectral efficiency and successful bits transmission in wireless communication, outperforming existing methods.

Contribution

It proposes a new multi-direction beamforming approach with antenna selection and a successive signal detection technique for IRS-assisted systems, improving transmission performance.

Findings

Increased average successful bits transmitted (ASBT).

Outperforms existing state-of-the-art methods.

Enhances spectral efficiency with IRS and multi-antenna selection.

Abstract

Intelligent reflecting surface (IRS) is being considered as a prospective candidate for next-generation wireless communication due to its ability to significantly improve coverage and spectral efficiency by controlling the propagation environment. One of the ways IRS increases spectral efficiency is by adjusting phase shifts to perform passive beamforming. In this letter, we integrate the concept of IRS-aided communication to the domain of multi-direction beamforming, whereby multiple receive antennas are selected to convey more information bits than existing spatial modulation (SM) techniques at any specific time. To complement this system, we also propose a successive signal detection (SSD) technique at the receiver. Numerical results show that the proposed design is able to improve the average successful bits transmitted (ASBT) by the system, which outperforms other state-of-the-art methods proposed in the literature.