空间调制辅助合作 NOMA 系统的性能分析

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-08-30 DOI:10.1109/LCOMM.2024.3452127

M. Hemanta Kumar;Alok Kumar;Sanjeev Sharma;Mogadala Vinod Kumar

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引用次数: 0

摘要

本文针对多输入多输出（MIMO）下行链路场景，提出了一种名为空间调制辅助合作非正交多址（SM-CNOMA）的新型通信方案。在 SM-CNOMA 系统中，基站（BS）通过两个时隙向三个用户传输信息，其中包括两个近端用户（NU）和一个远端用户（FU）。值得注意的是，NUs 以半双工模式运行，在合作阶段采用联合信号检测进行解码，并通过索引调制（IM）转发 FU 信息。考虑到用户间干扰（IUI），得出了拟议 SM-CNOMA 系统的比特误码率（BER）和遍历和率指标。在 SM-CNOMA 框架内全面分析了各种系统参数（如发射和接收天线数量）的影响。研究结果表明，SM-CNOMA 的性能优于有三个用户的传统 CNOMA 和预编码 CNOMA（PCNOMA）系统。这封信对 SM-CNOMA 在多输入多输出（MIMO）下行链路通信中的潜在优势提出了宝贵的见解，确定了它在减轻干扰和提高整体系统性能方面的效率。

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Performance Analysis of a Spatial Modulation Aided Cooperative NOMA System

In this letter, a novel communication scheme termed spatial modulation aided cooperative non-orthogonal multiple access (SM-CNOMA) is proposed for multiple-input and multiple-output (MIMO) downlink scenarios. In the SM-CNOMA system, the base station (BS) transmits information to three users across two time-slots, encompassing two near users (NUs) and a single far user (FU). Notably, NUs operate in a half-duplex mode and employ joint signal detection during the cooperative phase for decoding, and forward FU information through index modulation (IM). Bit error rate (BER) and ergodic sum-rate metrics are derived, by considering inter-user interference (IUI), of the proposed SM-CNOMA system. The impact of various system parameters, such as the number of transmit and receive antennas, is thoroughly analyzed within the SM-CNOMA framework. The presented results demonstrate that SM-CNOMA outperforms conventional CNOMA with three users and the precoded CNOMA (PCNOMA) systems. This letter contributes valuable insights into the potential benefits of SM-CNOMA in MIMO downlink communications, establishing its efficiency in mitigating interference and enhancing the overall system performance.

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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.