| 协作通信中的中继节点选取和功率分配联合优化 |
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| 引用本文： | 高伟东,王文博,袁广翔,彭木根. 协作通信中的中继节点选取和功率分配联合优化[J]. 北京邮电大学学报, 2008, 31(2): 68-71 |
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| 作者姓名： | 高伟东 王文博 袁广翔 彭木根 |
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| 作者单位： | 北京邮电大学,泛网无线通信教育部重点实验室,北京,100876;北京邮电大学,泛网无线通信教育部重点实验室,北京,100876;北京邮电大学,泛网无线通信教育部重点实验室,北京,100876;北京邮电大学,泛网无线通信教育部重点实验室,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 为了优化协作通信系统的性能，提出了一种基于信道容量增益的中继节点选取策略，并在此基础上提出了源节点和中继节点最优功率分配算法。通过采用凸优化的算法，功率在源节点和中继节点间得到了合理的分配。理论分析和仿真验证表明，所提算法能以较低的复杂度显著提高系统性能和功率效率，因而可以有效地用于基于中继传输的协作通信中。
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| 关 键 词： | 协作通信 中继节点选取 功率分配 凸优化 |
| 文章编号： | 1007-5321(2008)02-0068-04 |
| 收稿时间： | 2007-06-13 |
| 修稿时间： | 2007-06-13 |
Joint Relay Selection and Power Allocation Optimization in Cooperative Communications |
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| GAO Wei-dong,WANG Wen-bo,YUAN Guang-xiang,PENG Mu-gen. Joint Relay Selection and Power Allocation Optimization in Cooperative Communications[J]. Journal of Beijing University of Posts and Telecommunications, 2008, 31(2): 68-71 |
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| Authors: | GAO Wei-dong WANG Wen-bo YUAN Guang-xiang PENG Mu-gen |
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| Affiliation: | Key Laboratory of Universal Wireless Communication, Ministry of Education，Beijing University of Posts and Telecommunications, Beijing 100876,China |
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| Abstract: | A joint optimization strategy for relay selection and power allocation is proposed to optimize the performance of cooperative communication system. Convex optimization method is used to implement the algorithm, which optimally distributes power among the source and relay nodes. Both theoretical analysis and simulation results indicate that the proposed strategy notably improve system performance and energy efficiency with low implementing complexity, thus can be effectively used in cooperative communications based on relaying transmission. |
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| Keywords: | cooperative communication relay selection power allocation convex optimization |
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