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无线多中继系统中判决门限辅助的快速Z转发协作

包建荣 林昀轩 刘超 姜斌 朱芳 何剑海

包建荣, 林昀轩, 刘超, 姜斌, 朱芳, 何剑海. 无线多中继系统中判决门限辅助的快速Z转发协作[J]. 电子与信息学报, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183
引用本文: 包建荣, 林昀轩, 刘超, 姜斌, 朱芳, 何剑海. 无线多中继系统中判决门限辅助的快速Z转发协作[J]. 电子与信息学报, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183
Jianrong BAO, Yunxuan LIN, Chao LIU, Bin JIANG, Fang ZHU, Jianhai HE. Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183
Citation: Jianrong BAO, Yunxuan LIN, Chao LIU, Bin JIANG, Fang ZHU, Jianhai HE. Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183

无线多中继系统中判决门限辅助的快速Z转发协作

doi: 10.11999/JEIT200183
基金项目: 浙江省公益技术研究计划(LGG18F010011, LGG19F010004),浙江省属高校基本科研业务费专项资金 (GK209907299001-003),国家自然科学基金(U1809201),浙江省自然科学基金(LY20F010010)
详细信息
    作者简介:

    包建荣:男,1978年生,博士,教授,研究方向为空间无线通信、通信信号处理与自主无线电等

    林昀轩:男,1996年生,硕士生,研究方向为协作通信、信息论与编码

    刘超:男,1977年生,博士,副教授,研究方向为无线通信、计算机通信网等

    姜斌:男,1980年生,硕士,高级实验师,研究方向为空间无线通信、无线传感器网络等

    朱芳:男,1973年生,博士,讲师,研究方向为无线数字通信、迭代信号处理、物联网、嵌入式系统等

    何剑海:男,1977年生,硕士,副教授,研究方向为近地无线通信、嵌入式系统

    通讯作者:

    刘超 liuchao@hdu.edu.cn

  • 中图分类号: TN911

Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications

Funds: Zhejiang Provincial Science and Technology Plan Project (LGG18F010011, LGG19F010004), The Fundamental Research Funds for the Provincial Universities of Zhejiang (GK209907299001-003), The National Natural Science Foundation of China (U1809201), Zhejiang Provincial National Natural Science Foundation (LY20F010010)
  • 摘要: 针对Z向转发(ZF)协作所有中继节点均参与协作转发导致的能耗利用不合理问题, 该文提出了一种适用于多中继场景下的门限辅助判决快速Z转发(DT-FZF)协作。当中继节点处接收信号对数似然比(LLR)的绝对值小于门限时,中继节点不参与协作转发;否则中继节点协作转发经截断后的对数似然比(LLR)。放大转发(AF)、译码转发(DF)、分段转发(PF)和ZF协作可看作DT-FZF协作的特殊情况。在三中继系统,误比特率(BER)为10–3时,相比ZF协作,所提协作可获得约0.8 dB的性能增益。
  • 图  1  两跳多中继系统模型

    图  2  DT-FZF协作流程框图

    图  3  不同θ2i取值对双中继系统BER性能的影响

    图  4  各链路信噪比相同时,采用不同协作策略的双中继系统BER比较

    图  5  采用不同协作策略的双中继系统BER比较

    图  6  各链路信噪比相同时,采用不同协作策略的三中继系统BER比较

    表  1  采用DT-FZF协作的双中继系统θ2i最优取值,θ21=θ22

    SNRSR(dB)012345678910
    θ210.250.250.300.300.300.300.300.350.350.350.40
    下载: 导出CSV

    表  2  采用DT-FZF协作的双中继系统θ2i最优取值,θ21θ22

    SNRSR(dB)012345
    (θ21,θ22)(0.15, 0.25)(0.15, 0.25)(0.15, 0.25)(0.20, 0.30)(0.20,0.30)(0.25, 0.30)
    SNRSR(dB)678910
    (θ21,θ22)(0.25,0.30)(0.25,0.35)(0.30,0.35)(0.30,0.35)(0.30,0.40)
    下载: 导出CSV

    表  3  采用DT-FZF协作的三中继系统θ21最优取值,θ21=θ22=θ23

    SNRSR(dB)012345678910
    θ210.300.300.300.350.350.350.350.350.400.400.45
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-03-20
  • 修回日期:  2020-11-20
  • 网络出版日期:  2020-11-25
  • 刊出日期:  2021-05-18

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