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Simplified Summary of Intelligent Surface-Based Wireless Communications Research

Published on:

24 July 2023

Primary Category:

Information Theory

Paper Authors:

Jiacheng Yao,

Jindan Xu,

Wei Xu,

Chau Yuen,

Xiaohu You

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Key Details

Proposes superimposed RIS-phase modulation (SRPM) which superimposes tunable phase offsets onto RIS phases

SRPM establishes a general framework for RIS-based reflection modulation

Analytically derives error performance and capacity, showing optimal diversity order

Formulates precoding optimization to minimize error rate and maximize capacity

Develops low-complexity sphere decoding-based detection to enable practical use

AI generated summary

Simplified Summary of Intelligent Surface-Based Wireless Communications Research

This paper proposes a new method for modulating information onto the reflection patterns of reconfigurable intelligent surfaces (RIS) to achieve higher data rates in wireless communications. The key idea is superimposing tunable phase offsets onto predetermined RIS phases to convey extra messages beyond what is transmitted from the base station. Analytical and simulation results confirm the effectiveness of the proposed approach, termed superimposed RIS-phase modulation (SRPM). A low-complexity sphere decoding-based detection method is also introduced to enable practical implementation. Overall, this work provides a unifying framework for RIS-based reflection modulation and offers useful design guidelines.

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