Spectrally efficient code-domain based IRS transmission scheme for 6G communications

Sādhanā Pub Date : 2024-07-26 DOI:10.1007/s12046-024-02576-y

J Arun Kumar, R BABY Shalini, Naveena A Priyadharsini

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Abstract

The manuscript proposes a novel spectrally efficient code-domain (CD) based intelligent reflecting surface (IRS) transmission scheme intended for sixth-generation (6G) communications. IRS transmission creates a new paradigm for ultra-reliable, high-speed communications even at low signal-to-noise ratio (SNR) through intelligent manipulation of channel phases. The proposed CD-based IRS scheme studies the performance of IRS transmission both in dual-hop (DH) and access point (AP) modes with the presence of the channel phases. The proposed scheme improves the SNR at the receiver, and the simulation results validate the performance improvement. The performance curves analyze the distribution of symbol error probability (SEP) for different SNR values, signal constellations, and the number of reflecting elements. The SEP performance of the proposed scheme is superior to the conventional IRS scheme in all scenarios. Besides, the overall system performance is also tested without the knowledge of the channel phases. The system capacity and throughput performance results manifest the dominance of the proposed scheme under the context of high spectral efficiency.

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基于频谱高效码域的 IRS 传输方案，适用于 6G 通信

手稿提出了一种基于码域（CD）的新型频谱高效智能反射面（IRS）传输方案，旨在用于第六代（6G）通信。IRS 传输通过对信道相位的智能操纵，为超可靠、高速通信（即使在低信噪比（SNR）条件下）开创了一种新模式。所提出的基于 CD 的 IRS 方案研究了 IRS 传输在双跳（DH）和接入点（AP）模式下存在信道相位时的性能。提出的方案提高了接收器的信噪比，仿真结果验证了性能的提高。性能曲线分析了不同 SNR 值、信号星座和反射元素数量下符号错误概率 (SEP) 的分布。在所有情况下，拟议方案的 SEP 性能都优于传统的 IRS 方案。此外，还在不知道信道相位的情况下测试了系统的整体性能。系统容量和吞吐量性能结果表明，在高频谱效率的情况下，拟议方案具有优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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