Enhancing mmWave performance: Multi-RIS and antenna selection under hardware impairments

IF 2.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Digital Signal Processing Pub Date : 2025-06-06 DOI:10.1016/j.dsp.2025.105389

Duc Thinh Vu , Ba Cao Nguyen , Danh Khoa Nguyen , Taejoon Kim , Bui Vu Minh , Anh Vu Le

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引用次数: 0

Abstract

This article examines the capacity performance of millimeter-wave (mmWave) communication systems utilizing multiple reconfigurable intelligent surfaces (RISs). Specifically, transceiver hardware impairments (THI) at both source and destination are taken into account. To dramatically reduce the effects of THI, transmit antenna selection (TAS) is exploited at the source. The mathematical formulas of achievable rate (AR) and energy efficiency (EE) of the considered multi-RIS-mmWave systems with TAS are derived over Nakagami-m channels under the THI conditions. Numerical results clarify the big effects of THI on the AR and EE of the multi-RIS-mmWave systems. It is because the AR and EE with THI are greatly lower than those without THI (without THI is perfect transceiver hardware (PTH)). In this circumstance, utilizing TAS as well as RISs can achieve many benefits. In addition to the combined advantages of TAS and RISs, their individual advantages are also verified. In particular, the AR and EE achieved with TAS are significantly greater than those obtained without TAS. Then, other solutions such as increasing the number of RISs/reflecting elements (REs), rising the number of transmission antennas, and using suitable frequencies and bandwidths are provided to improve the AR and EE of the considered multi-RIS-mmWave systems with TAS and THI. Finally, the AR and EE expressions are verified by Monte-Carlo simulations.

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增强毫米波性能：硬件缺陷下的多ris和天线选择

本文研究了利用多个可重构智能表面（RISs）的毫米波（mmWave）通信系统的容量性能。具体来说，收发器硬件损伤（THI）在源和目标都被考虑在内。为了显著降低THI的影响，在源端利用发射天线选择（TAS）。在THI条件下，推导了具有TAS的多ris -毫米波系统在Nakagami-m信道上的可实现速率（AR）和能量效率（EE）的数学公式。数值结果表明THI对多ris -毫米波系统的AR和EE有很大的影响。这是因为有THI的AR和EE比没有THI的要低得多（没有THI是完美的收发器硬件（PTH））。在这种情况下，利用TAS和RISs可以获得许多好处。除了TAS和RISs的综合优势外，它们各自的优势也得到了验证。特别是，使用TAS获得的AR和EE明显大于未使用TAS获得的AR和EE。然后，提供了其他解决方案，例如增加RISs/反射元件（REs）的数量，增加传输天线的数量，以及使用合适的频率和带宽，以提高具有TAS和THI的多ris -毫米波系统的AR和EE。最后，通过蒙特卡罗仿真验证了AR和EE表达式的正确性。

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

Digital Signal Processing 工程技术-工程：电子与电气

CiteScore

5.30

自引率

17.20%

发文量

435

审稿时长

66 days

期刊介绍： Digital Signal Processing: A Review Journal is one of the oldest and most established journals in the field of signal processing yet it aims to be the most innovative. The Journal invites top quality research articles at the frontiers of research in all aspects of signal processing. Our objective is to provide a platform for the publication of ground-breaking research in signal processing with both academic and industrial appeal. The journal has a special emphasis on statistical signal processing methodology such as Bayesian signal processing, and encourages articles on emerging applications of signal processing such as: • big data• machine learning• internet of things• information security• systems biology and computational biology,• financial time series analysis,• autonomous vehicles,• quantum computing,• neuromorphic engineering,• human-computer interaction and intelligent user interfaces,• environmental signal processing,• geophysical signal processing including seismic signal processing,• chemioinformatics and bioinformatics,• audio, visual and performance arts,• disaster management and prevention,• renewable energy,