| 中继选择下的反馈错误分析和功率分配 |
| |
| 作者姓名： | 王磊 卫国 |
| |
| 作者单位： | 中国科学技术大学无线网络通信安徽省重点实验室, 合肥 230027 |
| |
| 基金项目： | 国家重点基础研究973计划(2007CB310602)资助 |
| |
| 摘 要： | 提出一种分析中继选择反馈错误影响的方法,给出反馈错误与目的节点接收信噪比的近似表达式.基于该表达式,给出数据传输和信息反馈2个阶段的功率分配方案,以最大化数据传输速率的上界.仿真结果显示,所提功率分配方案能够有效提高数据传输速率,且表明有噪反馈下中继数量受到限制.
|
| 关 键 词： | 中继选择 反馈错误 功率分配 |
| 收稿时间： | 2011-01-18 |
| 修稿时间： | 2011-02-11 |
Performance analysis and power allocation for relay selection with feedback error |
| |
| Authors: | WANG Lei WEI Guo |
| |
| Institution: | Wireless Information Network Laboratory,University of Science and Technology of China,Hefei 230027,China |
| |
| Abstract: | An analytical framework is proposed to analyze the effect of feedback error and the closed-form SNR expression is derived. Based on the closed-form expression, the power allocation between the feedback and data transmission stages is given to maximize the achievable rate upper bound. Simulation results show that the achievable rate can be effectively improved by the proposed power allocation and the relay number is limited with noisy limited feedback. |
| |
| Keywords: | relay selection feedback error power allocation |
|
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
