| 一种改进的多用户下行MIM0系统用户选择算法 |
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| 引用本文： | 郑海波,赵莉,李振伟. 一种改进的多用户下行MIM0系统用户选择算法[J]. 通信技术, 2009, 42(5): 42-44 |
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| 作者姓名： | 郑海波 赵莉 李振伟 |
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| 作者单位： | 1. 海军航空工程学院青岛分院,山东,青岛,266041
2. 海军飞行学院,辽宁,葫芦岛,125001 |
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| 摘 要： | 为了克服多用户下行MIMO系统采用迫零波束成形算法时基站天线的数目要大于等于所有同时工作的用户接收天线的数目之和的缺点，丈中提出了一种改进的多用户下行MIMO系统用户选择算法。该算法具有较低的算法复杂度，性能优于常规的基于贪婪算法的用户选择方法。
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| 关 键 词： | 多用户MIM0系统 迫零波束成形 用户选择 贪婪算法 |
An Improved User Selection Algorithm for Downlink Multiuser MIMO System |
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| ZHENG Hai-bo,ZHAO Li,LI Zhen-wei. An Improved User Selection Algorithm for Downlink Multiuser MIMO System[J]. Communications Technology, 2009, 42(5): 42-44 |
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| Authors: | ZHENG Hai-bo ZHAO Li LI Zhen-wei |
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| Affiliation: | ZHENG Hai-bo, ZHAO Li, LI Zhen-wei (①Qingdao Branch, Naval Aeronautical Engineering Institute, Qingdao Shandong 266041, China;②Naval Flight Institute, Huludao Liaoning 125001, China) |
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| Abstract: | This paper proposes an improved user selection algorithm, thus to overcome the drawback of zero-forcing beamforming algorithm in downlink multiuser MIMO system, that is, the number of antennas in the base-station must be greater than or equal to the sum of antennas of all receiver users. This algorithm yields a considerable reduction of complexity and outperforms the conventional user selection algorithm based on greedy algorithm. |
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| Keywords: | multiuser MIMO system zero-forcing beamfroming user selection greedy algorithm |
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