多相滤波器在跳频解调中的应用

本文针对全数字多载波跳频接收机提出一种高效的解调算法,首先,跳频技术因其具有良好的抗干扰性能,在军事通信中有着广泛的应用,本文在跳频接收机下采样的处理中,添加一组下采样滤波器组,用于跳频信号的解调,该算法较于以往的算法,复杂度较低,便于实现;且该算法采用的是并行捕获,可以实现信号的快速捕获,降低同步时间;解调后,第二组滤波器组用于实现MFSK调制信号的非相关解调,进一步降低解调端的复杂度。

Application of a multiphase filter in frequency hopping demodulation

This paper presents an efficient demodulation algorithm for all digital multicarrier FH receivers. Frequency-hopping technology has been widely used in military communication because of its good anti-interference performance. In this paper, a filter group, namely a multiphase filter group, is added under the commonly used frequency-hopping receivers. For frequency-hopping signal demodulation, the proposed algorithm is less complex and easier to implement than previously used algorithms. This algorithm adopts parallel capture, which can realize fast acquisition of signals and reduce synchronization time. After Demodulation, the second group of filters is used to realize the MFSK modulation signal''s non-correlation demodulation, thereby further reducing the demodulation end-signal complexity.