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首页> 外文期刊>Wireless Communications Letters, IEEE >Spectral Efficiency of a Frequency-Selective Cell-Free Massive MIMO System With Phase Noise
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Spectral Efficiency of a Frequency-Selective Cell-Free Massive MIMO System With Phase Noise

机译：具有相位噪声的频率选择性细胞的大规模MIMO系统的光谱效率

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摘要

This letter studies spectral efficiency of a frequency-selective cell-free massive multiple-input-multiple-output (MIMO) system with phase noise (PN) and imperfect channel state information. Two linear and low-complexity receivers are considered, namely, time-reversal maximum-ratio combining (TR-MRC) and time-reversal large-scale fading decoding (TR-LSFD). For each receiver, a lower bound on the uplink achievable spectral efficiency (SE) is obtained. From the obtained bounds, it is found that, compared to the TR-MRC receiver, the TR-LSFD receiver can attain a higher SE and the performance gain of the TR-LSFD receiver depends on the number of access points (APs) and the propagation losses between APs and users. Numerical results are provided to corroborate the accuracy of our analysis and the performance superiority of TR-LSFD receiver. Results also show that the effect of PN at users is stronger than the effect of PN at APs on the achievable SE.
机译：这封信研究了具有相位噪声（PN）和不完美信道状态信息的频率选择性无电池的大规模多输入 - 多输出（MIMO）系统的光谱效率。考虑两个线性和低复杂度接收器，即时间反转最大值 - 组合（TR-MRC）和时间反转大规模衰减解码（TR-LSFD）。对于每个接收器，获得上行链路可实现的频谱效率（SE）的下限。从所获得的范围内发现，与TR-MRC接收器相比，TR-LSFD接收器可以获得更高的SE，并且TR-LSFD接收器的性能增益取决于接入点（AP）和所述APS和用户之间的传播损失。提供了数值结果，以证实我们分析的准确性和TR-LSFD接收器的性能优势。结果还表明，PN在用户对可实现的SE上PN的影响更强的效果。

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