摘要
对Nakagami-m衰落下大规模分布式MIMO(D-MIMO)通信系统遍历性容量进行分析。首先,分别建立起估计边界上分布式MIMO系统和共址MIMO(C-MIMO)系统模型,在接收机中使用最大比合并(MRC,Maximal Ratio Combining)、迫零(ZF,Zero Forcing)和最小均方误差(MMSE,Minimum Mean Square Error)检测器的方案。然后,推导出可达率的表达式。通过仿真对比,当天线数目趋于无穷时,分布式MIMO系统较共址MIMO系统有更好的信道遍历容量,同等系统中MMSE检测器对Nakagami-m衰落信道遍历容量的性能有显著提高。
The ergodic capacity of massive distributed MIMO （D-MIMO） communication systems over Nakagami-m fading is analyzed in this paper. First, the system models of D-MIMO and co-located MIMO （C-MIMO） on the estimated boundary are established. The maximum ratio combining （MRC）, zero forcing （ZF） and minimum mean square error （MMSE） detectors are used in the receiver. Then, the expression of achievable rate is derived. Through simulation comparison, when the number of antenna approaches infinity, the D-MIMO system has higher channel ergodic capacity than the C-MIMO system, and MMSE detector has a significant improvement in the channel ergodic
作者
牛丹丹
邓国辉
张超
NIU Dandan;DENG Guohui;ZHANG Chao(Zhengzhou University of Science ＆ Technology College,Zhengzhou 450064 China;Beijing Jiaotong University Beijing 100044,China)
出处
《移动通信》
2018年第9期68-72,共5页
Mobile Communications
基金
河南省高等学校重点科研项目(16B510006)
