| 有限反馈MIMO系统中用户选择算法 |
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| 引用本文： | 陈磊,王大鸣,崔维嘉,王强. 有限反馈MIMO系统中用户选择算法[J]. 通信技术, 2011, 44(6): 15-17 |
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| 作者姓名： | 陈磊 王大鸣 崔维嘉 王强 |
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| 作者单位： | 信息工程大学信息工程学院,河南郑州,450002 |
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| 摘 要： | 针对有限反馈多输入多输出（MIMO）系统中用户选择问题,提出了一种新的用户选择方法。首先推导出采用迫零波束赋形（ZFBF）预编码时容量损失上限,证明了最小容量损失与最大和容量优化目标的一致性。在此基础上给出了基于最小容量损失的用户选择方法,该方法以信道量化误差为选择依据进行用户筛选。与现有算法相比,降低了算法的复杂度,减少了反馈CQI带来的系统开销。仿真和分析表明,所提方法改善了系统和容量性能。
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| 关 键 词： | 多输入多输出 有限反馈 用户选择 量化误差 信道容量损失 |
User Selection Strategy with Limited Feedback in MIMO System |
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| CHEN Lei,WANG Da-ming,CUI Wei-jia,WANG Qiang. User Selection Strategy with Limited Feedback in MIMO System[J]. Communications Technology, 2011, 44(6): 15-17 |
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| Authors: | CHEN Lei WANG Da-ming CUI Wei-jia WANG Qiang |
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| Affiliation: | CHEN Lei,WANG Da-ming,CUI Wei-jia,WANG Qiang(Institute of Information Engineering,Information Engineering University,Zhengzhou Henan 450002,China) |
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| Abstract: | Aiming at user selection problem for limited feedback Multiple Input Multiple Output(MIMO) system,a novel user selection strategy is proposed in this paper.The capacity-loss upper bound of the system,which employs Zero Forcing BeamForming(ZFBF) pre-coding,is deduced first,and the analysis shows that the minimum capacity-loss conforms to optimization of maximum capacity.Thus the user selection strategy based on the minimum capacity-loss is proposed,the strategy screens users according to the channel quantiza... |
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| Keywords: | MIMO limited feedback user selection quantization error channel capacity-loss |
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