测量通信信号调制识别技术研究

Research on modulation recognition technology of communication signal

摘要:

测量通信信号的调制识别的功能是在有噪声环境和各种信号的情况下判别出信号的信息和它的调制方式,也为更加深入的解析和分析信号提供相应支撑条件。本篇文章从原理基础到方案设计以及验证结果,层层递进的揭露了信号调制识别技术的原理、发展现状以及当前的先进识别技术,同时自己设计了一套识别方案对不同的模拟调制信号进行制式识别并分类。基于MATLAB的软件平台对基本的模拟调制信号进行仿真测试,确定判别门限,通过计算得出结论,成功识别了AM、DSB、SSB和FM四种信号。实验得出在SNR>12dB的时候能达到90%的制式识别正确率,证明设计的识别方案的可行性。

Abstract:

Communication signal modulation recognition of the basic tasks of identification and more signals in the noise environment and under the conditions of the received signal to determine the modulation and other signal parameters, so as to further analysis and provide the basis for signal processing. In this paper, in-depth study of the analog modulation signal format of the principle of recognition technology, the development of the status and the current advanced recognition technology, and at the same time designed to identify a set of programs for different modulation signal simulation and classification system to identify. MATLAB-based software platform for the simulation of the basic modulation signals simulation testing to determine the discrimination threshold, by calculating concluded that the successful identification of the AM, DSB, SSB and FM signals four. Experiments in the SNR> 12dB can be achieved when 90% of the standard to identify the correct rate of recognition programs designed to prove feasibility.