| 放大转发OFDM协同中继系统多业务资源分配机制 |
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| 引用本文： | 陈书平,王文博,张兴,付雷. 放大转发OFDM协同中继系统多业务资源分配机制[J]. 通信学报, 2010, 31(4): 116-121 |
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| 作者姓名： | 陈书平 王文博 张兴 付雷 |
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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 |
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| 基金项目： | 北京邮电大学优秀博士生创新基金，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 提出了点到点多载波协同中继系统多业务资源分配框架,并给出了一种最优化自适应功率、载波和比特分配算法;为了降低算法复杂度,又提出了一种次优搜索算法,该算法依据信道特性,在满足业务QoS基础上使业务占用资源最小.仿真结果表明:提出的最优算法在保障多媒体业务QoS的基础上能够有效改善频谱效率,对比于传统算法有1～2bit/(s·Hz)的性能提升;而提出的次优搜索能够取得接近最优算法的性能(差别在0.6 bit/(s·Hz)左右),并且实现复杂度由指数级别降至线性.
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| 关 键 词： | 协同中继通信 多媒体业务 资源分配 |
Resource allocation schemes in amplify-and-forward OFDM cooperative relay systems with multimedia traffic |
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| CHEN Shu-ping,WANG Wen-bo,ZHANG Xing,FU Lei. Resource allocation schemes in amplify-and-forward OFDM cooperative relay systems with multimedia traffic[J]. Journal on Communications, 2010, 31(4): 116-121 |
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| Authors: | CHEN Shu-ping WANG Wen-bo ZHANG Xing FU Lei |
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| Affiliation: | CHEN Shu-ping,WANG Wen-bo,ZHANG Xing,FU Lei (Key Laboratory of Universal Wireless Communication,Ministry of Education,Beijing University of Posts , Telecommunications,Beijing 100876,China) |
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| Abstract: | A framework of resource allocation for multimedia traffic in point-to-point OFDM (orthogonal frequency division multiplexing) cooperative relay systems was presented,an optimal adaptive power,carrier and bit allocation scheme was proposed. A sub-optimal fast-searching algorithm was proposed for practical implementation,which allocated the minimum resource to each service according to the channel conditions. Simulation results show that this scheme can meet the QoS (quality of service) requirement of the mul... |
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| Keywords: | OFDM cooperative relay communication OFDM multimedia traffic resource allocation |
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