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OFDMA解码转发中继系统的最优资源分配 被引量：1

Optimal Resource Allocation in OFDMA-Based Decode-and-Forward Relaying Systems
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摘要 针对正交频分多址接入-解码转发(OFDMA-DF)中继系统,提出了以最大化系统加权和速率为目标的子载波分配、功率分配、传输方式选择和中继选择联合优化问题.基于凸优化理论,提出了一种最优资源分配算法,其复杂度仅与子载波数成线性关系.理论分析和仿真结果表明,结合用户权重的调整,该算法既可实现资源分配的公平性,又可有效利用中继节点的能力,提高系统容量. The problems of the joint subcarrier allocation, power allocation, transmission mode selection and relay selection optimization which maximizes the weighted sum rate are addressed in orthogonal frequency division multiple access-based decode-and-forward （OFDMA-DF） relaying systems. Based on convex optimization theory, an optimal resource allocation algorithm is proposed. The complexity of this algorithm is only linear in the number of subcarriers. Simulation demonstrates that the scheme can achieve not only fair resource allocation but also effective relay utilization that enhances the system capacity through adjusting weighting factors for each user.
作者 陈凯 张碧玲 刘丹谱 乐光新
机构地区 北京邮电大学信息与通信工程学院 北京邮电大学网络教育学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2010年第1期12-17,共6页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(60872049 60871042 60971082 60972073) 国家高技术研究发展计划项目(2007AA10Z235) 国家重点基础研究发展计划项目(2009CB320407) 国家重大科技专项项目(2009ZX03003-001 2009ZX03003-011) 教育部留学归国人员教学 科研建设项目
关键词 正交频分多址接入 中继系统 解码转发 最优资源分配 凸优化 orthogonal frequency division multiple access relaying system decode-and-forward optimal resource allocation convex optimization
分类号 TN911.22 [电子电信—通信与信息系统]
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参考文献8

  • 1Nam W, Chang W, Chung S, et al. Transmit optimization for relay-based cellular OFDMA systems [ C ]//IEEE ICC 2007. Glasgow: [s. n. ] , 2007: 5714-5719.
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  • 3Chen Kai, Zhang Biling, Liu Danpu, et al. Fair resource allocation in OFDMA two-hop cooperative relaying cellular networks[ C ]//IEEE VTC 2009-Fall. Alaska: IEEE, 2009 : 1-5.
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同被引文献12

  • 1FAN Bin, WANG Wenbo, LIN Yicheng, HUANG Lin. Subcarrier allocation for OFDMA relay networks with proportional fair constraint [C]//Proceedings of the 2009 IEEE international Conference on Communications, Dresden, Germany, 2009, 8: 3415-3419.
  • 2WANG Wenyi, YAN Shefeng, YANG Shuyuan. Optimally joint subcarrier matching and power allocation in OFDM multihop system [J]. EURASIP Journal on Advances in Signal Processing, 2008: 1-8. Article ID 241378, 8 pages, 2008. doi:10.1155/2008/241378.
  • 3XIAO Lin, ZHANG Tiankui, ZHu Yutao, CUTHBERT L. Two-hop subchannel scheduling and power allocation for fairness in OFDMA relay networks [C]//2009 Fifth International Conference on Wireless and Mobile Communications, 2009: 267-271.
  • 4DANG Wenbing, TAO Meixia, Mu Hua, HUANG Jianwei. Subcarrier-pair based resourse allocation for cooperative multi-relay OFDM systems [J]. IEEE Transactions on Wireless Communications, 2010, 5: 1640-1649.
  • 5BOOSTANIMEBR H, DUVAL O, BHARGAVA V K, GAGNON F. Selective subcarrier pairing and power allocation for decode-and forward OFDM Relay Systems [C]//IEEE ICC 2010 Proceedings, Cape Town, South Africa, 2010, 5: 1-5.
  • 6SHI Jie, GONG Ping, Wu Weiling. Joint allocation of power and subcarriers for OFDMA relay network [C]//Proceedings of the 5th International Conference on Wireless Communications, Networking and Mobile Computing, Beijing, China, 2009, 9: 34-37.
  • 7SHEN Zhenhui, WANG Xiaoxiang, ZHANG Hongtao. Power allocation and subcarrier pairing for OFDM-based AF cooperative diversity systems [C]//Vehicular Technology Conference, 2009, VTC Spring 2009 IEEE 69th, 2009, 4: 1-5.
  • 8WANG Benxu, WEN Xiangming, Su Dongming, ZHENG Wei. User satisfaction based resource allocation for OFDMA relay networks in the resourceconstrained system [C]// Proceedings of the 2010 Second International Conference on Future Networks, 2010: 304-308.
  • 9XIAO Lin, CUTHBERT L. Improving fairness in relaybased access networks [C]//International Workshop on Modeling Analysis and Simulation of Wireless and Mobile Systems, 2008: 18-22.
  • 10卢光跃,陈文艺,王军选.多种业务下OFDMA无线资源管理[J].应用科学学报,2008,26(5):495-498. 被引量：1

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北京邮电大学学报
2010年 第1期

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