PLC信道上的协作非正交的多址接入  

Research on Cooperative Non-orthogonal Multiple Access over PLC Channel

作　　者：张长青 杨春光 梁丽 曹华锋 孙广 ZHANG Changqing;YANG Chunguang;LIANG Li;CAO Huafeng;SUN Guang(State Grid Gansu Electric Power Research Institute, Lanzhou 730070, China;Shenzhen Friendcom Technology Development Co. Ltd., Shenzhen 518018, China)

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730070 [2]深圳友讯达科技股份有限公司,广东深圳518018

出　　处：《微型电脑应用》2021年第11期108-112,共5页Microcomputer Applications

摘　　要：为了分析电力线通信(PLC)网络中协作电源域非正交多址接入(NOMA)的性能,通过半双工传输,信源在第一阶段传输叠加信号,中继在接收到的叠加信号上使用放大转发(AF)和解码转发(DF)协议,并在第二阶段将其转发给用户。在具有脉冲噪声的PLC对数正态信道下,推导了系统的中断概率和系统吞吐量的解析表达式。仿真结果表明,与无中继传输和传统正交多址(OMA)方案相比,AF-NOMA和DF-NOMA方案的中断概率和系统吞吐量性能均有所提高。In order to analyze the performance of cooperative power domain non-orthogonal multiple access(NOMA)in power line communication(PLC)network,through half duplex transmission,the source transmits the superimposed signal in the first stage,the relay uses the amplification forwarding(AF)and decoding forwarding(DF)protocols on the received superimposed signal,and forwards them to the user in the second stage.In the log normal channel of PLC with impulse noise,the analytical expressions of interruption probability and system throughput are derived.The simulation results show that the interrupt probability and system throughput performance of AF-NOMA and DF-NOMA schemes are improved compared with those of non-relay transmission and traditional orthogonal multiple access(OMA)schemes.

关 键 词：电力线通信 非正交多址 放大转发 解码转发 系统吞吐量 

分 类 号：TN914[电子电信—通信与信息系统]