Differential Polarization Shift Keying Through Reconfigurable Intelligent Surfaces

TL;DR

This paper introduces a novel RIS-based communication scheme that encodes information through differential polarization shifts, enabling non-coherent detection and robustness against channel fluctuations in line-of-sight environments.

Contribution

It proposes a new differential polarization shift keying method using reconfigurable intelligent surfaces for robust wireless communication.

Findings

The scheme is immune to polarization fluctuations.

Enables non-coherent detection at the receiver.

Improves robustness in line-of-sight channels.

Abstract

We propose a novel reconfigurable intelligent surface (RIS) encoded information transmission scheme for a line-of-sight environment. A RIS fed with data modulates the information on impinging waves emitted from an external source in the states of polarization (SoP) of the scattered waves by performing a novel differential polarization shift keying. In particular, the information is encoded in the change of the SoP over two successive scattering slots. The proposed scheme is immune to the SoP fluctuations in the wireless channel which allows for non-coherent detection at the receiver.