2FSK信号的相关解码算法

A correlation demodulation algorithm of 2FSK signal

给出了一种基于短时循环自相关特性的2FSK信号快速解码算法。该算法具有抗干扰性能好、编程简单、计算量少、信号动态范围大、便于用DSP芯片实现等优点。用此算法设计的系统实时解调8路2FSK信号,实地入网运行效果良好。文中对相关解码算法运用中的有关问题进行了讨论。

This paper presents a fast demodulation algorithm of a 2FSK signal based on short time cycle autocorrelation. The new algorithm has evident advantages such as good antijamming,easy programming, less computation, big dynamic range,convenient realization on DSP chips and so on. It has been used in a communication system design to demodulate 8 channels of 2FSK signal real time, and shown that the system works well on line. A discussion of relative issues about the new algorithm applications are also given in the paper.