电工技术学报  2020, Vol. 35 Issue (11): 2306-2318    DOI: 10.19595/j.cnki.1000-6753.tces.191036
能源互联网中的分布式建模、优化与控制技术专题(特约主编:郭庆来 教授 郭烨 教授) |
电力线通信信道下协作非正交多址接入系统的分布式机会中继选择
蒲红红, 刘晓胜, 韩铭, 徐殿国
哈尔滨工业大学电气工程及自动化学院 哈尔滨 150001
Distributed Opportunistic Relay Selection for Cooperative Non-Orthogonal Multiple Access Power Line Communication Networks
Pu Honghong, Liu Xiaosheng, Han Ming, Xu Dianguo
School of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150001 China
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摘要 该文将非正交多址接入(NOMA)技术应用于下行多中继协作电力线通信(PLC)网络,考虑对数正态信道衰落和伯努利-高斯信道噪声,设计机会式中继选择方案。首先,根据电力线信道的瞬时信道状态信息(ICSI)进行目的节点排序,同时自适应调整功率分配系数。其次,以满足目的节点服务质量(QoS)要求和最小化系统功耗为目标,分别针对译码转发(DF)和放大转发(AF)协议设计基于加权调和平均的分布式机会中继选择方案。然后,分别分析两协议下的系统性能并进行Monte-Carlo仿真分析。结果表明,所设计方案可获得比基准方案更优的系统性能;该文DF方案能够进行两次功率分配系数动态调整,并可获得比AF方案更高的吐量性能;此外,该方案分布式进行,能够节约用于ICSI反馈的信令开销。
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蒲红红
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韩铭
徐殿国
关键词 中继电力线通信非正交多址接入对数正态衰落中继选择中断概率    
Abstract:In this paper, non-orthogonal multiple access (NOMA) technique was applied to downlink multiple-relay cooperative power line communication (PLC) networks. And with considering the fading channel modeled by log-normal distribution and the additive noise modeled by two-state Bernoulli-Gauss, an opportunistic relay selection scheme was proposed. The node order was first designed and power allocation coefficients were adaptively adjusted according to the instantaneous channel state information (ICSI) of the PLC channels. In order to meet the quality of service (QoS) requirements of destination nodes and minimize the system power consumption, the distributed opportunistic relay selection schemes based on the maximum weighted harmonic mean were then respectively designed for decode-and-forward (DF) and amplify-and-forward (AF) protocols. Next, the system outage probability and throughput were analyzed and verified by Monte-Carlo simulations. The results show that the performances of the proposed scheme are better than those of benchmark schemes; compared to our AF scheme, the higher system throughput performance can be achieved by our DF scheme due to its twice power allocation coefficients adjusting. Also, our scheme can be executed in distribution thereby saving the signaling overhead for the ICSI feedback.
Key wordsRelaying power line communication    non-orthogonal multiple access    log-normal fading    relay selection    outage probability   
收稿日期: 2019-08-18     
PACS: TN915  
基金资助:国家自然科学基金(51677034)和黑龙江省自然科学基金(ZD2018012)资助项目
通讯作者: 刘晓胜 男,1966年生,教授,博士生导师,研究方向为电力线载波通信和能源路由器等。E-mail:liuxsh@hit.edu.cn   
作者简介: 蒲红红 女,1992年生,博士研究生,研究方向为电力线载波通信、非正交多址接入、协作中继等。E-mail:honghpuxc@163.com
引用本文:   
蒲红红, 刘晓胜, 韩铭, 徐殿国. 电力线通信信道下协作非正交多址接入系统的分布式机会中继选择[J]. 电工技术学报, 2020, 35(11): 2306-2318. Pu Honghong, Liu Xiaosheng, Han Ming, Xu Dianguo. Distributed Opportunistic Relay Selection for Cooperative Non-Orthogonal Multiple Access Power Line Communication Networks. Transactions of China Electrotechnical Society, 2020, 35(11): 2306-2318.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.191036          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I11/2306