Inter Code Interference Suppression Method for Optical Communication Based on Single Cycle Dynamic Compensation
Aiming at the problem of high communication error rate after interference suppression due to ignoring the random-ness of optical signal interference when dealing with optical communication inter code interference,a method based on single cycle dynamic compensation for optical communication inter code interference suppression is proposed.Firstly,the wavelet transform algorithm is used to perform discrete transformation on the real-time collected optical communication signals,cal-culate the wavelet coefficients of signals of different scales,and compare the adaptive judgment threshold to identify inter symbol interference.Then,the principle of nonlinear control is introduced to design a single cycle control strategy for inter code interference distortion in optical communication.Finally,the principle of single cycle dynamic compensation is introduced to track the positive signal and flipped negative signal in the modulation signal of optical communication,calculate the dynam-ic compensation signal for single cycle interference,and concatenate the positive and negative signals and bias signals after compensation and amplitude limiting.The experimental results show that under the condition of a signal-to-noise ratio of 4dB,applying a new method to suppress inter symbol interference in optical communication can achieve a maximum error rate of only 0.45％.As the signal-to-noise ratio increases,the error rate will continue to decrease,and the new method is less affected by different modulation methods.
single cycle dynamic compensationoptical communicationinter code interference
万方数据
维普
