Analyzing Energy Efficiency Trade-Offs in RIS Aided Cell-Free Massive MIMO Networks

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Vehicular Technology Pub Date : 2025-02-21 DOI:10.1109/TVT.2025.3544774

Debajit Choudhury;Abhay Kumar Sah

引用次数: 0

Abstract

Cell-free massive multiple-input multiple-output (CF-mMIMO) network allows multiple access points (APs) to serve users with no cell boundaries. This helps in serving a large number of users with a uniform quality of service (QoS). However, the large-scale deployment of such a network results in poor energy efficiency (EE) and higher deployment cost. Recently, reconfigurable intelligent surfaces (RISs) are being considered to improve the energy efficiency of the CF-mMIMO network. In this work, we investigate the extent to which the EE can be improved by varying the proportions of APs and RISs in the network. We analyze the trade-offs for the centralized and distributed processing schemes under a generic power consumption model and quantify the optimal number of APs and RISs required. Results unveil that the RIS aided CF-mMIMO can significantly enhance the EE gains if the APs and RISs are employed in an optimal proportion.

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分析 RIS 辅助无小区大规模多输入多输出网络的能效权衡

无小区大规模多输入多输出（CF-mMIMO）网络允许多个接入点（ap）为没有小区边界的用户提供服务。这有助于为大量用户提供统一的服务质量（QoS）。然而，这种网络的大规模部署导致能源效率低，部署成本高。最近，可重构智能表面（RISs）被考虑用于提高CF-mMIMO网络的能源效率。在这项工作中，我们研究了通过改变网络中ap和RISs的比例来改善EE的程度。我们分析了在通用功耗模型下集中式和分布式处理方案的权衡，并量化了所需ap和RISs的最佳数量。结果表明，如果APs和RISs以最佳比例使用，RIS辅助的CF-mMIMO可以显着提高EE增益。

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 Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.