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首页> 外文期刊>IEEE systems journal >Massive Relaying Communication System Under IQ Imbalance and Hardware Manufacturing Problems
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Massive Relaying Communication System Under IQ Imbalance and Hardware Manufacturing Problems

机译：IQ不平衡和硬件制造问题下的大规模中继通信系统

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Physical radio-frequency transceivers have hardware problems, such as hardware manufacturing defects and in-phase/quadrature-phase (IQ) imbalance. These problems can degrade the performance of communication systems. This paper investigates the performance of multipair massive antenna relaying (MP-MAR) communication system under IQ and hardware manufacturing problems, in which multiple pairs of users exchange information within pair. This paper analyzes the parameters for each problem separately and their impact on the proposed MP-MAR system. This paper also derives new closed-form expressions for the outage probability and ergodic capacity, accounting for hardware problems. The results show that hardware problems negatively affect the system performance, and that the problem of IQ is the most influential on the system performance. Also, the performance loss is small at low signal-to-noise ratio (SNR), but at high SNR, the signal-to-noise plus distortion ratios (SNDRs) ceiling is inversely proportional to the level of hardware problems. This stands in contrast to the ideal MP-MAR system in which the SNDR increases without bound at high SNR.
机译：物理射频收发器存在硬件问题，例如硬件制造缺陷和同相/正交相（IQ）不平衡。这些问题会降低通信系统的性能。本文研究了多对大规模天线中继（MP-MAR）通信系统在智商和硬件制造问题下的性能，其中多对用户在一对内交换信息。本文分别分析每个问题的参数及其对所提出的MP-MAR系统的影响。本文还考虑到硬件问题，得出了停机概率和遍历容量的新闭合形式表达式。结果表明，硬件问题会对系统性能产生负面影响，而IQ问题对系统性能的影响最大。同样，在低信噪比（SNR）时性能损失很小，但是在高SNR时，信噪比与失真比（SNDR）的上限与硬件问题的级别成反比。这与理想的MP-MAR系统形成对比，在理想的MP-MAR系统中，SNDR在高SNR下无限制地增加。

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