基于LabWindows/CVI的ASK＋DPSK数字信号的解调实现  

Demodulation of ASK+DPSK digital signal based on LabWindows/CVI

作　　者：陈熙源[1] 谭全福[1] 孟玲丽[2] 

机构地区：[1]东南大学仪器科学与工程学院,南京210096 [2]电子科技大学自动化学院,成都610054

出　　处：《中国惯性技术学报》2009年第3期288-292,共5页Journal of Chinese Inertial Technology

基　　金：教育部新世纪人才支持计划(NCET-06-0462);船舶支撑技术基金项目(6922001029);江苏省“六大人才高峰”资助项目(A类)

摘　　要：为实现软件无线电中频数字解调功能,采用矢量信号发生器产生ASK信号,使用PXI-9820以60MHz对ASK信号进行数据采样,基于LabWindows/CVI软件平台设计人机对话面板,自主编码产生ASK+DPSK数字信号。设计解调程序模块对ASK信号予以载波恢复,并完成对ASK+DPSK数字信号的解调。仿真结果与预想设计编码相符合,该平台的数字化方案实现载波恢复可以有效地消除多普勒频移对解调结果的影响。To realize the IF digital demodulation function by software radio, an ASK signal was generated using a vector signal generator, and was sampled at 60 MHz by PXI-9820. A man-machine dialogue panel was designed based on the LabWindows/CVI software platform, and the ASK＋DPSK digital signal was generated by auto-encoding method. The demodulation module was programmed to recover ASK carrier signal and to demodulate ASK＋DPSK digital signal. The simulation results are consistent with the designed code in the ASK＋DPSK, and show that the impact of Doppler frequency shift on demodulation result can be effectively removed by the proposed platform＇s digitalization scheme to realize carrier recovery.

关 键 词：软件无线电 ASK+DPSK CVI 解调 

分 类 号：U666.1[交通运输工程—船舶及航道工程]