Spectral Efficiency of Distributed MIMO Systems
Spectral Efficiency of Distributed MIMO Systems
复制标题
分布式 MIMO 系统的频谱效率
DOI：
10.1109/jsac.2013.131012
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发表时间：
2013-09
影响因子：
16.4
通讯作者：
Xiaoyun Hou
中科院分区：
文献类型：
--
作者：
Dongming Wang;Jiangzhou Wang;Xiaohu You;Yan Wang;Ming Chen;Xiaoyun Hou
分布式多输入多输出（D-MIMO）系统是一种很有前途的系统，可以大大提高蜂窝系统的频谱效率和功率效率。D-MIMO系统频谱效率的性能分析是理论研究和技术评估的基础问题。本文研究了D-MIMO系统和传统的同位MIMO（C-MIMO）系统的频谱效率的理论性能，并进行了比较。首先，给出了一种包含路径损耗、阴影衰落和多径衰落的复合D-MIMO信道。以期望用户位置为条件，利用紧界和中心极限理论，分别推导了C-MIMO和D-MIMO信道在高信噪比和低信噪比下互信息均值和累积分布函数的解析近似表达式.假设用户在小区中随机分布，给出了C-MIMO和D-MIMO蜂窝系统的频谱效率的CDF，并推导了平均频谱效率、平均中断频谱效率的闭式表达式。最后，在大量天线的情况下，对C-MIMO和D-MIMO进行了理论比较，并给出了仿真结果，验证了分析结果。
Distributed multi-input multi-output (D-MIMO) system is a promising system to greatly improve the spectral efficiency and power efficiency of the cellular system. The performance analysis of the spectral efficiency of D-MIMO system is a fundamental problem for both theoretical study and technique evaluation. In this paper, the theoretical performances of spectral efficiency for D-MIMO system and traditional collocated MIMO (C-MIMO) system are studied and compared. First, a composite D-MIMO channel including path loss, shadow fading and multipath fading is given. Conditioned on the desired user position, by using the tight bounds and central limit theory, the analytical approximations of the mean and the cumulative distribution function (CDF) of the mutual information (MI) are derived for C-MIMO and D-MIMO channels at both high signal to noise ratio (SNR) and low SNR. Assuming that the users are randomly distributed in the cell, the CDFs of the spectral efficiency are also given for the C-MIMO and D-MIMO cellular system, and the closed-form expressions for the mean spectral efficiency, mean outage spectral efficiency are derived. Finally, the theoretical comparisons between C-MIMO and D-MIMO for large number of antennas are given, and simulation results are presented which validate the analytical results.
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影响因子：
2.5
作者：
Hochwald, BM;Marzetta, TL;Tarokh, V
通讯作者：
Tarokh, V
DOI：
10.1109/vetec.1997.600409
发表时间：
1997-05
期刊：
1997 IEEE 47th Vehicular Technology Conference. Technology in Motion
影响因子：
--
作者：
Mohamed-Slim Alouini;A. Goldsmith
通讯作者：
Mohamed-Slim Alouini;A. Goldsmith
影响因子：
2.5
作者：
WYNER, AD
通讯作者：
WYNER, AD
影响因子：
10.4
作者：
F. Héliot;R. Hoshyar;R. Tafazolli
通讯作者：
F. Héliot;R. Hoshyar;R. Tafazolli
DOI：
10.1109/7693.994816
发表时间：
2002-04
期刊：
IEEE Trans. Wirel. Commun.
影响因子：
--
作者：
Severine Catreux-Erceg;P. Driessen;L. Greenstein
通讯作者：
Severine Catreux-Erceg;P. Driessen;L. Greenstein