Binary Polarization Shift Keying with Reconfigurable Intelligent Surfaces

TL;DR

This paper introduces a new binary polarization shift keying scheme utilizing reconfigurable intelligent surfaces to encode information in polarization states, enhancing wireless communication in line-of-sight environments.

Contribution

It presents a novel RIS-based polarization modulation method that enables non-coherent detection and polarization mismatch correction, advancing polarization modulation techniques.

Findings

Effective polarization encoding using RIS demonstrated

Non-coherent demodulation enabled by RIS pre-coding

Polarization mismatch correction improves reliability

Abstract

We propose a novel binary polarization shift keying modulation scheme for a line-of-sight environment by exploiting the polarization control ability of the reconfigurable intelligent surface (RIS). The RIS encodes the information data in terms of the polarization states of either the reflected wave from the RIS or the composite wireless channel between an RF source and receiver. In the first case, polarization mismatch correction becomes essential at the receiver. In the second case, the RIS pre-codes the reflected wave to compensate for the polarization mismatch which allows non-coherent demodulation at the receiver.