电力线和无线双媒质通信系统的自适应中继协议  

Adaptive relay protocol for power line-wireless hybrid media communication system

作　　者：史燕平 王丽娇 李秀彩 李朗 黄鑫 陈智雄[3] SHI Yanping;WANG Lijiao;LI Xiucai;LI Lang;HUANG Xin;CHEN Zhixiong(NARI Group Corporation/State Grid Electric Power Research Institute,Nanjing 211006,China;State Key Laboratory of Smart Grid Protection and Control(NARI Group Corporation),Nanjing 211106,China;Department of Electronic and Communication,North China Electric Power University,Baoding 071003,China)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院有限公司),江苏南京211006 [2]南瑞集团有限公司智能电网保护与运行控制国家重点实验室,江苏南京211106 [3]华北电力大学电子与通信工程系,河北保定071003

出　　处：《电力自动化设备》2021年第6期171-178,共8页Electric Power Automation Equipment

基　　金：国家自然科学基金青年基金资助项目(61601182);河北省自然科学基金资助项目(F2017502059)。

摘　　要：综合考虑混合媒质通信和中继协作技术,研究了无线移动接入、无线和电力线并行传输的系统。利用多维对数正态近似算法以及终端信噪比的矩生成函数,分别推导出系统采用放大前传(AF)和译码前传(DF)时中断概率的闭合解析式;为了有效克服AF和DF中继协议的缺点,提出了自适应中继协议,即根据信道通信质量动态选择AF或者DF中继协议,并给出了具体的实现步骤;最后采用蒙特卡洛仿真验证了理论分析的有效性和可靠性。理论和仿真结果表明,与AF和DF中继协议相比,所提出的自适应中继协议在低信噪比区域和高信噪比区域均能获得较好的通信质量。Considering hybrid media communication and relay cooperative technology,the wireless mobile access,wireless and power line parallel transmission systems are studied.By using multidimensional LogN approximation algorithm and MGF(Moment Generating Function)of terminal SNR(Signal to Noise Ratio),the closed analytic expressions of the outage probability when the system adopts AF(Amplify and Forward)and DF(Decode and Forward)are deduced respectively.Then,in order to overcome the shortcomings of AF and DF relay protocols effectively,the adaptive relay protocol is proposed,that is,AF or DF relay protocols are dynamically selected according to the channel communication quality.The specific implementation steps are given.Monte Carlo simulation is used to verify the effectiveness and reliability of theoretical analysis,and the theoretical and simulative results show that,compared with AF and DF relay protocols,the pro⁃posed adaptive relay protocol can achieve better communication quality in both low and high SNR regions.

关 键 词：混合媒质通信 电力线通信 无线通信 分集合并 自适应中继协议 多维LogN近似算法 性能分析 

分 类 号：TM73[电气工程—电力系统及自动化]