一种基于模式识别的FSK信号解调新方法的研究

Study on a New Method of FSK Demodulation Based on Pattern Recognition Principles

根据ＦＳＫ信号特点，模拟了一种基于模式识别的ＦＳＫ信号解调新方法。此方法不仅比传统的鉴频器易于实现，而且能有效地克服信道有色噪声和脉冲干扰的影响。实验表明：在相同条件下可使误码率下降１～２个数量级，在此基础上提出了一种新的ＦＳＫ信号解调的硬件实现方法。

In this paper, a new method of FSK demodulation based on pattern recognition principle is simulated. Overcoming the influence of color noise and inpulse noise,this method is easier to realize than the traditional way-Frequency Sensitive Detector.An experiment shows that under the same condition, it can make the error code ratio 1 ～2 powers lower than the old way. Based on the discussion, a new hardware structure for FSK demodulation is presented.