| 下行MIMO通信系统的多用户分集研究 |
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| 引用本文： | 姚冰心,胡爱群.下行MIMO通信系统的多用户分集研究[J].电子与信息学报,2009,31(1):5-8. |
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| 作者姓名： | 姚冰心 胡爱群 |
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| 作者单位： | 东南大学无线电工程系,南京,210096 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，江苏省自然科学基金 |
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| 摘 要： | 该文研究了下行多用户MIMO通信系统中多用户分集问题，并且提出了两种基于最大系统容量准则的多用户分组调度算法。提出了一种基于相关用户的信道向量间内积的价值因子。通过使用该价值因子作为信道容量的评价标准，有效地降低了分组调度过程的复杂度。仿真结果显示该文提出的多用户调度算法可以明显提高系统容量；且随着系统中激活用户数量的增加，系统的调度增益不断增大。
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| 关 键 词： | 无线通信 多输入多输出 多用户分集 调度算法 |
| 收稿时间： | 2007-7-16 |
| 修稿时间： | 2007-12-12 |
On the Multi-user Diversity for Downlink Channel of Multi-user MIMO System |
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| Yao Bing-xin,Hu Ai-qun.On the Multi-user Diversity for Downlink Channel of Multi-user MIMO System[J].Journal of Electronics & Information Technology,2009,31(1):5-8. |
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| Authors: | Yao Bing-xin Hu Ai-qun |
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| Affiliation: | Department of Radio Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | In this paper, multi-user diversity in the downlink channel of multi-user MIMO system is investigated and two multi-user scheduling algorithms are proposed which are based on the criteria of maximum system capacity. A factor based on inner products of channel vectors of relative users is used and complexity of scheduling procedure is greatly reduced. Simulation results are presented that multi-user scheduling methods enlarge system average capacity, and with the increase of the number of active users, multi-user scheduling gain grows gradually. |
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| Keywords: | Wireless communication MIMO Multi-user diversity Scheduling algorithm |
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