IRS-NOMA Transmission in Cooperative Networks

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-07 DOI:10.1109/LCOMM.2025.3558252

Vahid Zibakalam;Mehrdad Ardebilipour;Bahareh Akhbari;Abolqasem Hesam

引用次数: 0

Abstract

In this letter, we propose a novel scheme that utilizes a hybrid relay and intelligent reconfigurable surface (IRS) to enable simultaneous transmission of two symbols from a source to a destination using a non-orthogonal multiple access (NOMA) scheme. As the proposed scheme benefits from the advantages of the multiplexing technique, the spectral efficiency increases. In the devised scheme, the achievable sum-rate is maximized by optimizing the IRS coefficients and the NOMA power allocation coefficients. We derive closed-form expressions for these optimal coefficients based on the channel state information. Simulation results demonstrate the superiority of the proposed scheme compared to benchmark scenarios.

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协同网络中的IRS-NOMA传输

在这封信中，我们提出了一种新的方案，利用混合继电器和智能可重构表面（IRS）来实现使用非正交多址（NOMA）方案从源到目的地同时传输两个符号。该方案充分利用了复用技术的优点，提高了频谱效率。在设计的方案中，通过优化IRS系数和NOMA功率分配系数，使可实现的和速率最大化。我们根据通道状态信息推导出这些最优系数的封闭表达式。仿真结果证明了该方案与基准方案相比的优越性。

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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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.