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| 有限反馈的MIMO系统容量分析 | |
| 引用本文： | 周雯,王军. 有限反馈的MIMO系统容量分析[J]. 汕头大学学报(自然科学版), 2013, 0(1): 46-52 |
| 作者姓名： | 周雯 王军 |
| 作者单位： | 汕头大学电子工程系 |
| 基金项目： | 广东省高校育苗工程资助项目(2012LYM_0064) |
| 摘 要： | 容量是移动通信系统设计中的一个重要因素,该文研究了有限反馈下的MIMO系统容量,给出了确保系统获得正容量增益时所需的最小反馈比特数的表示式.数值计算对比了采用RVQ方法和LBG码本生成方法下的系统容量,并且分别列出了若干天线对和信噪比下所需的最小反馈比特数.结果表明:当反馈比特数大于等于某个门限值,系统将会产生正容量增益,反之相反;整体上来看,RVQ方法优于LBG方法. |
| 关 键 词： | MIMO 有限反馈 容量 |
Capacity Analysis of MIMO System with Limited Feedback |
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| ZHOU Wen,WANG Jun. Capacity Analysis of MIMO System with Limited Feedback[J]. Journal of Shantou University(Natural Science Edition), 2013, 0(1): 46-52 | |
| Authors: | ZHOU Wen WANG Jun |
| Affiliation: | (Department of Electronic Engineering,Shantou University,Shantou 515063,Guangdong,China) |
| Abstract: | Capacity is an important factor in the design of wireless communication systems.The capacity for multiple-input multiple-output(MIMO) with limited feedback is investigated in this paper.The expression of the closed-loop MIMO capacity with limited feedback and the expression of the number of minimum feedback bits are derived so that positive capacity gain is guaranteed.Numerical method is employed to examine the MIMO closed-loop capacities using RVQ and LBG methods,respectively.The number of minimum feedback bits under several antenna pairs and signal to noise ratios(SNRs) has also been provided.The results show that the capacity gain is positive when the number of feedback bits is larger than a threshold,and otherwise the opposite;in general,the RVQ method is superior to LBG method. |
| Keywords: | MIMO limited feedback capacity |
| 本文献已被 CNKI 等数据库收录！ | |