| 协作中继网络中节点传输时间和位置优化算法 |
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| 引用本文： | 江帆,田辉,张平.协作中继网络中节点传输时间和位置优化算法[J].西安邮电学院学报,2011,16(1):11-15,44. |
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| 作者姓名： | 江帆 田辉 张平 |
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| 作者单位： | 1. 西安邮电学院,通信与信息工程学院,陕西,西安,710121
2. 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： | 新世纪优秀人才支持计划项目(NCET-08-0891); 陕西省自然科学基金资助项目(2010JQ80241) |
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| 摘 要： | 在协作中继网络中提出一种基于(Quality-of-Service,QoS)驱动的协作节点传输时间和协作节点位置优化算法。基于当前用户的QoS时延需求,从理论上可推导出解码转发中继模式下系统容量表达式。以最大化系统容量为目标,可获得最优的协作节点传输时间和最优的协作节点位置。仿真结果表明,该优化算法能够自适应地确定最优节点的位置和传输时间,从而获得最大化系统容量,进一步有效提升整个系统的性能。
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| 关 键 词： | 协作中继网络 QoS 联合优化 协作分集 |
Optimization algorithm for cooperative relay networks |
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| JIANG Fan,TIAN Hui,ZHANG Ping.Optimization algorithm for cooperative relay networks[J].Journal of Xi'an Institute of Posts and Telecommunications,2011,16(1):11-15,44. |
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| Authors: | JIANG Fan TIAN Hui ZHANG Ping |
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| Affiliation: | JIANG Fan1,TIAN Hui2,ZHANG Ping2(1.School of Communication and Information Engineering,Xi' an University of Posts and Telecommunications,Xi'an 710121,China,2.Universal Wireless Communications Key Laboratory of Education Ministry,Beijing University of Posts and Telecommunications,Beijing 100876,China) |
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| Abstract: | A QoS-driven optimization algorithm is presented for cooperative relay networks.Under DF(Decode and Forward) cooperative relaying mode,the closed-form expressions of the system capacity subject to a given delay QoS constraint are derived theoretically.A new scheme of choosing the optimal distance and the optimal transmission time from the source to relay is proposed to maximize the throughput of the cooperative relay network.Simulation results show that,the proposed scheme works effectively and the system's... |
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| Keywords: | cooperative relay network Quality-of-Service(QoS) joint optimization cooperative diversity |
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