A Nonlinear Equalization Method Based on Weighted Principal Component Analysis
A technique of weighted principal components and equalization method, applied in the fields of instruments, optical fiber transmission, computing, etc., which can solve the surge in the number of Volterra second-order and third-order expansion terms, the inability to improve the transmission capacity of communication systems, and the inability to deploy short-range receivers, etc. problems, to facilitate real-time processing, avoid performance degradation, and reduce complexity
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[0051] A nonlinear equalization method based on weighted principal component analysis is used to compensate channel impairments at the receiving end of optical fiber communication systems, such as figure 2 As shown, the method includes: a nonlinear mapping step, a principal component projection step and a nonlinear equalization step;
[0052] like figure 2 As shown, the nonlinear mapping step specifically includes:
[0053] S1: Data preprocessing: downsampling and amplitude normalization of the sequence to be processed;
[0054] As a preferred implementation manner, in this embodiment, in the nonlinear mapping step, after down-sampling the sequence to be processed, the sampling rate of the sequence to be processed is the same as the sampling rate of the transmitted signal;
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