激光通信中DPPM调制解调技术的FPGA实现  

Implementation on FPGA of DPPM for laser communication in atmosphere

作　　者：朱孟祥[1] 唐普英[1] 唐湘成[2] 刘怡[2] 曾晶[2] 曾军[2] 

机构地区：[1]电子科技大学,四川成都610054 [2]西南技术物理研究所,四川成都610041

出　　处：《电子设计工程》2011年第15期142-144,共3页Electronic Design Engineering

摘　　要：调制与解调是大气激光通信中的一项关键技术。为了进一步提高传输通道抗干扰能力,在大气激光通信系统提出了脉冲位置调制(PPM)技术,它具有较强的抗干扰能力,能够很好地满足信号传输要求。通过对脉冲位置调制原理的分析,提出了一种基于PPM调制解调的改进方法——差分脉神位置调制(DPPM),使用QuartusII 8.1软件,编写verilog代码,经过反复调试和实验,验证了设计的可行性。Modulation and demodulation are key technologies of atmospheric laser correspondence.In order to further improve the anti-interference ability of transmission channel,the technology of pulse position modulation（PPM） is proposed in the Atmospheric laser communication systems.The PPM technology has strong anti-interference ability which satisfies the requirements of signal transmission.By analyzing the principles of PPM,an improved method of modulation and demodulation based on PPM-differential pulse position modulation（DPPM） is proposed.With the use of QuartusII 8.1 software and verilog code,after repeated testing and experiments,the feasibility of the design is verified.

关 键 词：调制 解调 激光通信 DPPM 

分 类 号：TN929.1[电子电信—通信与信息系统]