| 基于信道统计量信息的中继OFDMA系统资源分配 |
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| 引用本文： | 宋高俊,刘洪武,夏思满.基于信道统计量信息的中继OFDMA系统资源分配[J].系统仿真学报,2011,23(9):1966-1969,1979. |
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| 作者姓名： | 宋高俊 刘洪武 夏思满 |
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| 作者单位： | 南昌航空大学,信息工程学院,南昌330063 |
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| 基金项目： | 航空科学基金(2009ZC56006) |
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| 摘 要： | 研究了正交频分多址（OFDMA）两跳中继网络的资源分配问题。假设系统只有用户的信道统计量信息,基于用户的速率和中断容量要求,提出了自适应的中继选择、功率和子载波分配的优化问题;在保证每个用户最小速率需求情况下,使系统的总发射功率最小。应用对偶优化方法,导出了资源分配的最优解。此外,为了降低资源分配算法的复杂性,分别研究了基于信道统计量的贪婪算法和半分布式算法。仿真结果表明,提出的算法和无中继系统比较有很大的性能改进。
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| 关 键 词： | 中继 资源分配 OFDMA 中断容量 |
Resource Allocation for Relay OFDMA Systems Based on Statistical Channel Knowledge |
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| SONG Gao-jun,LIU Hong-wu,XIA Si-man.Resource Allocation for Relay OFDMA Systems Based on Statistical Channel Knowledge[J].Journal of System Simulation,2011,23(9):1966-1969,1979. |
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| Authors: | SONG Gao-jun LIU Hong-wu XIA Si-man |
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| Institution: | SONG Gao-jun,LIU Hong-wu,XIA Si-man(School of Information Engineering,Nanchang Hangkong University,Nanchang 330063,China) |
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| Abstract: | The resources allocation for the Orthogonal Frequency Division Multiple Access(OFDMA) based two-hop relay network was studied based on the knowledge of the channel statistics and the rate requirements for all users.Relying on the outage capacities connected to the user rates,an optimization problem for an adaptive allocation for the sub-carriers,paths,and power was formulated so that the system transmitting power could be minimized while their minimum rate requirements were guaranteed for each user.The opti... |
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| Keywords: | relay resource allocation OFDMA outage capacity |
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