摘要
提出了一种基于线性调频Z变换CZT的PCM/FM信号解调算法。分析了利用PCM/FM信号的频率进行解调的理论基础,根据实际PCM/FM信号的非平稳性和利用FFT实现时的缺点,提出了基于CZT的信号解调方法。详细的论述了此种解调算法的基本原理和实现过程,分析了该算法的解调误码率。计算机仿真结果表明,该算法对于实际接收的PCM/FM信号具有较好的解调性能。
A new algorithm of demodulation was proposed based on the CZT.Through analyzing the basic theory of demodulation by spectrum,the method for PCM/FM signal demodulation based on CZT was proposed according to the instability of factual PCM/FM signal.The basic theory and the course of realization were discussed,and the performance and bit error rate of this method were analyzed.The results of computer simulation show that the method has better performance of demodulation,high efficiency for factual PCM/FM signal.
出处
《国外电子测量技术》
2010年第7期34-37,49,共5页
Foreign Electronic Measurement Technology
