From mMIMO to xMIMO: A Unified Design for Spatial Wideband Effect Mitigation

IF 5.1 3区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Wireless Communications Letters Pub Date : 2025-03-25 DOI:10.1109/LWC.2025.3553905
Muhammad Qurratulain Khan;Mohammad Parvini;Philipp Schulz;Gerhard Fettweis
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Abstract

Large antenna apertures and/or ultra wideband (UWB) transmission engender the spatial wideband (SWB) effect, resulting in reduced array gain, spectral efficiency (SE), and higher bit error probability. To this end, this letter proposes a novel double-delay-phase precoding (DDPP) architecture that can be realized with a small number of true time delays (TTDs), mitigating the negative impact of the SWB effect. The numerical results, over the massive and extreme multiple-input multiple-output (MIMO) use cases and in the frequency range (FR)2 and FR3, showcase the effectiveness of the proposed DDPP in terms of the array gain, SE, and bit error rate (BER).
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从mimo到xMIMO:空间宽带效应减缓的统一设计
大的天线孔径和/或超宽带(UWB)传输会产生空间宽带(SWB)效应,导致阵列增益降低、频谱效率(SE)降低、误码率提高。为此,本文提出了一种新的双延迟相位预编码(DDPP)架构,该架构可以用少量的真时间延迟(TTDs)来实现,从而减轻了SWB效应的负面影响。在大量和极端多输入多输出(MIMO)用例以及频率范围(FR)2和FR3中,数值结果显示了所提出的DDPP在阵列增益、SE和误码率(BER)方面的有效性。
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来源期刊
IEEE Wireless Communications Letters
IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering
CiteScore
12.30
自引率
6.30%
发文量
481
期刊介绍: IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.
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