软件无线电技术解调方法研究  

Research on Demodulation Method of Software Radio Technology

作　　者：孙志勇 SUN Zhiyong(Modern Educational Technology and Information Center,Heilongjiang University of Chinese Medicine,Harbin,Heilongjiang 150040,China)

机构地区：[1]黑龙江中医药大学现代教育技术与信息中心,黑龙江哈尔滨150040

出　　处：《微型电脑应用》2020年第8期59-61,75,共4页Microcomputer Applications

基　　金：黑龙江省教育科学“十三五”规划课题(GBC1317168)。

摘　　要：研究软件无线电技术解调方法,针对通信系统中的解调系统,通过LabVIEW IDE和G语言的使用完成了软件无线电解调系统方案的设计,详细阐述了实现系统功能的关键技术,针对调幅和调频信号包括外部采集到的(通过通用数据采集卡完成)和本地文件中的已调信号通过综合运用数据采集和虚拟仪器技术完成相应的解调和分析过程。采用软件脉冲均值标记滤波算法和MSK信号数字化解调方法实现调频信号的解调过程,从而使调频波的解调得以有效实现。此外该软件无线电解调系统还具备保存、打印实时信号波形数据及回放历史信号的功能。This paper mainly studies and designs the demodulation method of software radio technology. The design of software radio demodulation system is completed by using LabVIEW IDE and G language. The key technology of the system function such as the amplitude modulation and frequency modulation signals is illustrated. The externally acquired is completed by the universal data acquisition card, through the comprehensive use of data acquisition and virtual instrument technology the modulated signals in the local file is to complete the corresponding demodulation and analysis process. The demodulation process of the FM signal is realized by the software pulse mean label filtering algorithm and the digital demodulation method of the MSK signal, so that the demodulation of the FM wave can be effectively realized. In addition, the software radio demodulation system also has the functions of saving and printing real-time signal waveform data and playing back historical signals.

关 键 词：软件无线电 LABVIEW 数据采集 脉冲均值 MSK信号 

分 类 号：TN925[电子电信—通信与信息系统]