莱斯信道下具有硬件损伤的多对双向大规模MIMO AF中继系统及性能分析

发布时间：2018-05-08 22:41

  本文选题：大规模多输入多输出 + 半双工　； 参考：《信号处理》2017年11期

【摘要】：本文研究了莱斯信道条件下具有硬件损伤的多对双向大规模多输入多输出放大转发(massive MIMO amplify-and-forward,MM-AF)中继系统,多对用户通过配置有大规模天线阵列的中继实现用户对内的信息交换,并分析了其频谱效率和能量效率。首先,考虑了硬件损伤对多对双向MM-AF中继系统性能的影响,并将其建模为发送和接收失真噪声。然后,给出了半双工中继(half-duplex relaying,HDR)和全双工中继(full-duplex relaying,FDR)模式下的迫零发送/迫零接收处理矩阵。最后,分别给出了两种模式下的信干噪比渐近表达式。理论分析和仿真结果表明,在中继天线数较大情况下FDR的频谱和能量效率优于HDR;随着信噪比的增加,两种模式下系统的频谱效率先增大后收敛于一个固定值;当中继天线数较大时,系统的频谱效率主要受限于用户处的硬件损伤而非中继处或其他干扰。
[Abstract]:In this paper, we study a multi-pair large-scale MIMO amplifying and forwarding MM-AFM relay system with hardware damage under the condition of hardware damage. Multi-pair users can exchange information between users through relaying with large antenna array. The spectral efficiency and energy efficiency are analyzed. Firstly, the effect of hardware damage on the performance of a multi-pair two-way MM-AF relay system is considered, and it is modeled as transmitting and receiving distorted noise. Then, the zero-forcing transmission / zero-forcing receiving processing matrix in half-duplex relaying HDR and full-duplex relaying FDR mode is given. Finally, the asymptotic expressions of signal-to-noise ratio in two modes are given. The theoretical analysis and simulation results show that the spectral and energy efficiency of FDR is better than that of HDR when the number of relaying antennas is large, and the spectral efficiency of the two modes first increases and then converges to a fixed value with the increase of SNR. When the number of relaying antennas is large, the spectral efficiency of the system is limited by the hardware damage rather than the relay or other interference.
【作者单位】： 陆军工程大学通信工程学院;南京邮电大学通信与信息工程学院;
【基金】：国家自然科学基金重大研究计划(91438115);国家自然科学基金项目(61371123,61301165,61671472) 江苏省自然科学基金项目(BK20160079) 中国博士后科学基金项目(2014M552612) 江苏省博士后科学基金项目(1401178C) 总装预研项目基金(9140C020306130C02007)资助
【分类号】：TN929.5
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本文编号：1863428