| 有限反馈的多小区协作多模传输方法 |
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| 引用本文： | 孙栋,邱玲. 有限反馈的多小区协作多模传输方法[J]. 应用科学学报, 2010, 28(5): 457-462. DOI: 10.3969/j.issn.0255-8297.2010.05.003 |
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| 作者姓名： | 孙栋 邱玲 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系，合肥230027 |
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| 基金项目： | 国家科技重大专项基金(No.2008ZX03003-004;No.2010ZX03002-003)国家科技支撑计划基金 |
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| 摘 要： | 摘要： 多小区协作多天线技术能够有效降低蜂窝系统小区间干扰，提升边缘吞吐率，然而其性能依赖于各基站获取的信道状态信息的准确性和基站间的协作程度. 该文以两小区模型为基础，分析了基于有限反馈的信道状态信息对多小区局部联合传输性能的影响，并针对用户在多小区边缘的分布特征，提出基于用户分布位置的多模传输切换策略. 仿真结果表明，该策略有效提升了小区边缘吞吐率.
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| 关 键 词： | 多输入多输出 多小区 有限反馈 边缘吞吐率 |
| 收稿时间： | 2010-06-21 |
| 修稿时间： | 2010-09-13 |
Coordinated Multi-cell Multi-mode Transmission Scheme with Limited Feedback |
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| SUN Dong,QIU Ling. Coordinated Multi-cell Multi-mode Transmission Scheme with Limited Feedback[J]. Journal of Applied Sciences, 2010, 28(5): 457-462. DOI: 10.3969/j.issn.0255-8297.2010.05.003 |
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| Authors: | SUN Dong QIU Ling |
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| Affiliation: | Department of Electronic Engineering and Information Science, University of Science and Technology of China,;Hefei 230027, China |
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| Abstract: | Coordinated multi-cell multi-antenna transmission can effectively mitigate inter-cell interference in cellular MIMO systems, thus improving cell edge throughput. However, the performance heavily depends on the channel state information and cooperation among multiple base stations. In this paper, we investigatethe impact of limited feedback on the multi-cell local joint precoding based on 2-cell cooperative transmission. According to the location of cell edge users, we propose a multi-mode transmission method. Simulation results show that it can significantly enhance cell edge throughput. |
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| Keywords: | MIMO multi-cell limited feedback cell edge throughput |
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