2FSK信号调制与非相干解调的仿真设计与分析  

Simulation Design and Analysis of 2FSK Signal Modulation and Non-coherent Demodulation

作　　者：尚丽[1] SHANG Li(School of Electronic Information Engineering,Suzhou Vocational University,Suzhou 215104,China)

机构地区：[1]苏州市职业大学电子信息工程学院,江苏苏州215104

出　　处：《苏州市职业大学学报》2022年第1期5-11,共7页Journal of Suzhou Vocational University

基　　金：国家自然科学基金资助项目(61373098);“333工程”资助项目(BRA2018130)。

摘　　要：二进制频移键控(2FSK)调制方式和信号解调技术被广泛应用于通信系统中,但是其理论内容对高职院校的学生而言比较抽象,学生难以理解和掌握。本研究基于2FSK信号调制与非相干解调原理,借助Matlab/Simulink仿真技术,实现2FSK信号键控调制法和非相干解调法的Simulink建模和仿真。仿真实验表明,仿真结果和理论分析的结果一致,验证了理论分析方法的正确性。The method of binary frequency shift keying (2FSK) and the signal demodulation technique are widely used in communication system.However,for students in vocational colleges,the theory of 2FSK modulation and demodulation is very abstract and difficult to understand and master.Therefore,in the practical teaching,on the basis of the principle of 2FSK modulation and non-coherent demodulation,the modulation and demodulation of 2FSK signals can be implemented by means of Matlab /Simulink simulation technology.Thus,students can observe directly the change of waveform in the process of signal transmission and understand each module’s composition and its operating principle of the system of 2FSK modulation and demodulation.Because the keying modulation method and non-coherent demodulation method are usually used in 2FSK modulation and demodulation,the two methods’ Simulink modeling and simulation implementation are discussed emphatically in this paper.The simulation experiment shows that results of the simulation analysis are consistent with those of the theoretical analysis,which testify the correctness of the simulation analysis method.

关 键 词：通信系统 二进制频移键控(2FSK) 调制 非相干解调 MATLAB/SIMULINK仿真 

分 类 号：TN914.3[电子电信—通信与信息系统]