Research on Bandwidth Narrowband Interference Suppression Based on Improved Double - Threshold FCME Algorithm

According to the high signal-to-noise ratio of satellite communication, the power spectral density of the traffic signal is greater than that of the noise caused by the traditional two-threshold FCME algorithm which may causes the threshold fuzzy, makes the signal distortion, resulting in the reduction of the bit error rate. In this paper, the author improves the double threshold FCME threshold algorithm through the algorithm based on the double threshold, adding the method of predicting the median threshold to process the spectrum of the received signal. The new algorithm has a good suppression effect on the narrowband interference in the signal with high SNR condition, reducing the damage of the signal by the traditional double threshold FCME algorithm.