Nonlinear distortion compensation method for multi-domain optical fiber communication based on improved k-means
In order to solve the distortion problem caused by nonlinear effects on fiber optic communication signals during transmission and improve the stability of fiber optic communication systems,an improved k-means multi domain fiber optic communication nonlinear distortion compensation method is proposed.Build a multi domain optical fiber communication transmission model,use a wavelength converter at the transmission end to transmit the input signal to the fiber,and linearize the pulse recovery optical signal based on interference principle.Describe the dispersion char-acteristics of fiber optic communication using signal-to-noise ratio,and clarify the occurrence of nonlinear distortion changes in signal interaction.By improving the k-means method through the Dijkstra method,the distortion constella-tion is demodulated to avoid clustering falling into local optima,making all cluster signals as close as possible to the o-riginal modulation center,and achieving distortion compensation.The experimental results show that after compensa-ting for nonlinear distortion in fiber optic communication using the proposed method,the clustering effect is better,and the information error rate can be reduced to 10-7,effectively reducing network transmission consumption and improving the quality of fiber optic communication signals.
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