| 基于中继放大转发的多天线基站下行传输性能分析 |
| |
| 引用本文： | 李光平,张广驰,崔苗,冯久超.基于中继放大转发的多天线基站下行传输性能分析[J].电子学报,2013,41(7):1305-1312. |
| |
| 作者姓名： | 李光平 张广驰 崔苗 冯久超 |
| |
| 作者单位： | 1. 广东工业大学信息工程学院, 广东广州 510006;
2. 华南理工大学电子与信息学院, 广东广州 510641;
3. 中国电子科技集团公司第7研究所, 广东广州 510310 |
| |
| 基金项目： | 国家自然科学基金(No.61102070);广东省自然科学基金(No.S2011040004135) |
| |
| 摘 要： | 研究基站具有多根天线、中继与用户具有单天线的中继放大转发多用户系统,利用正交空时分组编码和机会主义调度策略同时获得空间分集和多用户分集.针对自适应增益和固定增益转发策略,首先导出独立不同分布瑞利衰落下系统中断概率和误码率的闭合表达式;随后根据高信噪比下系统的渐近性能确定系统的分集阶数,分析空间分集和多用户分集对系统性能的联合影响,并与单跳多天线基站下行传输系统进行性能比较;最后利用计算机仿真验证理论分析结果的正确性.
|
| 关 键 词： | 多天线系统 无线中继转发系统 正交空时分组编码 多用户分集 |
| 收稿时间： | 2012-12-28 |
Performance Analysis of Downlink Systems with a Multi-Antenna Base Station Based on Amplify-and-Forward Relaying Strategy |
| |
| LI Guang-ping,ZHANG Guang-chi,CUI Miao,FENG Jiu-chao.Performance Analysis of Downlink Systems with a Multi-Antenna Base Station Based on Amplify-and-Forward Relaying Strategy[J].Acta Electronica Sinica,2013,41(7):1305-1312. |
| |
| Authors: | LI Guang-ping ZHANG Guang-chi CUI Miao FENG Jiu-chao |
| |
| Affiliation: | 1. Faculty of Information Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, China;
2. School of Electronic and Information Engineering, South China University of Technology, Guangzhou, Guangdong 510641, China;
3. China Electronics Technology Group Corporation No.7 Research Institution, Guangzhou, Guangdong 510310, China |
| |
| Abstract: | A multiuser Amplify-and-Forward (AF) relay system is considered in which the source is equipped with multiple antennas,while the relay and each of multiple destinations have a single antenna.Orthogonal Space-Time Block Coding (OSTBC) is employed to achieve spatial diversity and opportunistic scheduling is used to obtain multiuser diversity.Closed-form expressions for outage probability and average Symbol Error Rate (SER) in independent but not identically distributed (i.n.i.d.) Rayleigh fading multiuser environments are derived for adaptive-gain and fixed-gain relaying methods.Asymptotic expressions for outage probability and average SER at high SNR are presented and used to determine the diversity order of the two relaying systems.The combined effect of spatial and multiuser diversity is quantified for the proposed system.Monte Carlo simulations demonstrate the accuracy of the analyses presented.Comparisons among the relaying methods and multiuser point-to-point systems are provided along with insights. |
| |
| Keywords: | multiple-antenna systems wireless relaying systems Orthogonal Space-Time Block Code (OSTBC) multiuser diversity |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载全文 |
|
