MSK调制下的匹配滤波接受研究  

Research on Matched Filtering Reception Under MSK Modulation

作　　者：胥艳[1] 陈鲁聪 XU Yan;CHEN Lucong(No.91208 Troops of the PLA,Qingdao 266000;Naval Aeronautical University,Yantai 264001)

机构地区：[1]中国人民解放军91208部队 [2]海军航空大学

出　　处：《舰船电子工程》2018年第4期35-39,共5页Ship Electronic Engineering

摘　　要：MSK信号具有相位连续,频谱较FSK调制信号窄等优点,被广泛用于对潜、对空通信中。文章首先从MSK的原理出发,得到MSK信号正交双通道的调制的框图,然后由MSK调制的框图结构,将MSK信号分解为正交I路与Q路信号,分别进行匹配滤波接受解调,然后将得到的I路与Q路的判决码元进行差分进一步得到发送的信号,最后通过仿真分析验证MSK调制与解调框图的正确性,同时MSK匹配滤波的解调算法容错性能较好,与其它的调制方式相比,MSK远远优于ASK、FSK调制,性能稍差于PSK调制。MSK signal has the advantages of continuous phase and narrow frequency spectrum compared with FSK modulation signal,so it is widely used in submarine and air to air communications.This paper starts from the principle of MSK,get the block diagram of MSK signal modulation orthogonal dual channel,then through the structure of MSK modulation MSK signal is decomposed into orthogonal I road and Q road signal,respectively received demodulation matched filtering,decision symbols and the obtained I road and Q road of difference further send the signal,the simulation results verify the correctness of the modulation and demodulation of MSK diagram,and MSK matching filter demodulation algorithm of fault-tolerant performance is better,compared with other modulation,MSK is much better than ASK and FSK modulation,and it has poorer performance than PSK modulation.

关 键 词：MSK调制 匹配滤波接受 正交双通道 解调性能 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]