Optimization of iterative Chase soft decoder based on cross entropy minimization.

Optical Fiber Communications Conference and Exhibition（2024）

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Abstract

We propose a scheme to optimize the parameters of iterative Chase decoder. Minimizing the cross entropy loss of the final stage Chase decoder output in the form of log-likelihood ratio improves turbo product code performance.

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Key words

Cross-entropy,Iterative Decoding,Soft Decoding,Cross-entropy Minimization,Likelihood Ratio Test,Final Output,Cross-entropy Loss,Output Format,Form Of Ratio,Decoder Output,Bit Error,Information Bits,Codeword,Forward Error Correction,Least Significant Bit,Most Significant Bit,Quadrature Amplitude Modulation,Stochastic Gradient Descent Method,Decoding Algorithm,Fiber Transmission,Loss Function Optimization

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