低压电力线宽带载波通信系统发射端物理层的实现  

Implementation of physical layer of transmitter on low-voltage power line broadband carrier communication system

作　　者：金鑫 张乐平 罗鸿轩 胡珊珊 Jin Xin;Zhang Leping;Luo Hongxuan;Hu Shanshan(Southern Power Grid Institute of Science,Guangzhou 510080,China)

机构地区：[1]南方电网科学研究院有限责任公司,广州510080

出　　处：《电测与仪表》2018年第16期78-83,118,共7页Electrical Measurement & Instrumentation

摘　　要：文章分析了载波通信的现状,以及宽带载波测量的关键因素。研究了低压电力线宽带载波通信系统物理层发射端的结构,该物理层发射端由信道编码、星座映射、IFFT、循环前缀与加窗、正交调制和加前导等模块构成,针对上述模块从算法实现的角度进行了分析研究。文章对Turbo交织模块、编码模块、IFFT模块等关键模块的FPGA实现方案进行了详细介绍和分析。该实现方案对宽带载波标准信号生成设备研发具有一定的指导意义。。This paper analyzes the current situation of carrier communication and key factors of broadband carrier measurement.The structure of physical layer of transmitter on low-voltage power line broadband carrier communication system is studied.The physical layer of transmitter includes channel coding module,OFDM modulator,constellation mapper,IFFT module,cyclic prefix and window module,orthogonal modulation module and inseting preamble module.These modules are analyzed and studied from the perspective of algorithm implementation.FPGA implementing scheme of Turbo interleaver,encoding module and IFFT module is introduced and analyzed in details,which has certain guiding significance for the generation equipment of broadband carrier standard signals.

关 键 词：低压电力线宽带载波通信 OFDM调制 TURBO编码 信道交织 分集拷贝 

分 类 号：TM93[电气工程—电力电子与电力传动]