OFDM低压电力线通信系统的符号同步及其FPGA实现  

Symbol synchronization for low-voltage power line communication system based on OFDM and its FPGA implementation

作　　者：何世彪[1] 王杰强[1] 韩彦净[1] 张青[1] 吴红桥[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《电子技术应用》2012年第4期94-97,共4页Application of Electronic Technique

摘　　要：为采用FGPA技术可靠实现基于G3-PLC协议的OFDM电力线通信系统的符号同步,推导了符号同步偏差对G3-PLC系统性能的影响。针对传统符号同步算法存在的算法复杂、FPGA实现困难等缺点,根据G3-PLC系统的帧结构,提出了基于训练序列的新的符号同步算法。仿真结果和FGPA实现效果表明,该算法不仅能够有效地实现G3-PLC系统的符号同步,而且运算量小,硬件资源消耗少。To implement well symbol synchronization of power FGPA, this paper deduceds the influence of symbol synchronization line communication system based on G3-PLC specification with offset on G3-PLC system. The conventional algorithm has some limitations, such as high complexity, difficult FPGA implementation, and so on. A new algorithm based on training sequence is pre- sented according to the character of G3-PLC frame structure. Both simulation and implementing in FPGA show that the algorithm not only be effective in achieving the symbol synchronization, but also has low computation and hardware resource consumption,

关 键 词：正交频分复用 电力线通信 G3-PLC协议 符号同步 FPGA 

分 类 号：TN914[电子电信—通信与信息系统]