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基于非正交多址接入中继通信系统的功率优化

黄容兰 刘云 李啟尚 唐文

黄容兰, 刘云, 李啟尚, 唐文. 基于非正交多址接入中继通信系统的功率优化[J]. 电子与信息学报, 2019, 41(8): 1909-1915. doi: 10.11999/JEIT180842
引用本文: 黄容兰, 刘云, 李啟尚, 唐文. 基于非正交多址接入中继通信系统的功率优化[J]. 电子与信息学报, 2019, 41(8): 1909-1915. doi: 10.11999/JEIT180842
Ronglan HUANG, Yun LIU, Qishang LI, Wen TANG. Power Allocation Optimization of Cooperative Relaying Systems Using Non-orthogonal Multiple Access[J]. Journal of Electronics & Information Technology, 2019, 41(8): 1909-1915. doi: 10.11999/JEIT180842
Citation: Ronglan HUANG, Yun LIU, Qishang LI, Wen TANG. Power Allocation Optimization of Cooperative Relaying Systems Using Non-orthogonal Multiple Access[J]. Journal of Electronics & Information Technology, 2019, 41(8): 1909-1915. doi: 10.11999/JEIT180842

基于非正交多址接入中继通信系统的功率优化

doi: 10.11999/JEIT180842
基金项目: 国家自然科学基金(61501531);梧州学院2012校级科研项目(2012C001)
详细信息
    作者简介:

    黄容兰:女,1982年生,硕士,讲师,研究方向为物理层技术与多用户检测、无线网络通信资源分配与调度

    刘云:男,1980年生,博士,副教授,研究方向为无线通信,水声通信、扩频与码分多址理论

    李啟尚:男,1986年生,助教,研究方向为电子技术设计与应用

    唐文:女,1984年生,讲师,研究方向为电子技术设计与应用

    通讯作者:

    刘云 lauwin007@yahoo.com

  • 1) 在本文中,统计信道信息(S-CSI)是指用信道的统计信息来描述信道特征,比如衰落分布类型、平均信道增益等特征参数;瞬间信道信息(I-CSI)则是指实时反映当前信道状态的参量。
  • 2) 本文研究的是中继工作在半双工模式的情况,同样,所提出的H-PAS功率分配策略也同样适用于当中继工作在全双工(Full-Duplex, FD)模式的场景。
  • 3) 对于功率域的非正交多址接入系统而言,就上行链路来说,一般认为质量好的信道为强信号并且在接收端被先解码;而对于下行链路来说,一般认为质量好的信道为弱信号并且在接收端被后解码。
  • 中图分类号: TN929

Power Allocation Optimization of Cooperative Relaying Systems Using Non-orthogonal Multiple Access

Funds: The National Natural Science Foundation of China (61501531), The Scientific Research Project of Wuzhou University 2012 (2012C001)
  • 摘要: 针对基于非正交多址接入(NOMA)技术的中继通信系统,在兼顾系统性能与计算复杂度的基础上,该文提出一种结合统计信道信息(S-CSI)和瞬时信道信息(I-CSI)的混合功率分配策略(H-PAS)来有效实现上述折中。仿真结果表明,NOMA方案在H-PAS策略下,一方面比单纯利用S-CSI时的传统正交多址接入技术具有更高的频谱效率;另一方面在和速率差别不大的情况下,又比单纯利用I-CSI时的NOMA方案具有更低的信令开销和计算复杂度。
  • 图  1  系统模型

    图  2  所提NOMA与OMA在两种不同信道条件下的系统遍历容量对比

    图  3  性能对比与图2相同但信道条件不同

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    DING Zhiguo, YANG Zheng, FAN Pingzhi, et al. On the performance of non-orthogonal multiple access in 5G systems with randomly deployed users[J]. IEEE Signal Processing Letters, 2014, 21(12): 1501–1505. doi: 10.1109/LSP.2014.2343971
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出版历程
  • 收稿日期:  2018-08-29
  • 修回日期:  2019-01-30
  • 网络出版日期:  2019-03-19
  • 刊出日期:  2019-08-01

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