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arXiv · 2104.08190

Autoencoder-Based Unequal Error Protection Codes

Vukan Ninkovic·Dejan Vukobratovic·Christian Häger·Henk Wymeersch·Alexandre Graell i Amat
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Abstract

We present a novel autoencoder-based approach for designing codes that provide unequal error protection (UEP) capabilities. The proposed design is based on a generalization of an autoencoder loss function that accommodates both message-wise and bit-wise UEP scenarios. In both scenarios, the generalized loss function can be adjusted using an associated weight vector to trade off error probabilities corresponding to different importance classes. For message-wise UEP, we compare the proposed autoencoder-based UEP codes with a union of random coset codes. For bit-wise UEP, the proposed codes are compared with UEP rateless spinal codes and the superposition of random Gaussian codes. In all cases, the autoencoder-based codes show superior performance while providing design simplicity and flexibility in trading off error protection among different importance classes.

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Vukan Ninkovic, Dejan Vukobratovic, Christian Häger, Henk Wymeersch, Alexandre Graell i Amat. 2021-04-16. Autoencoder-Based Unequal Error Protection Codes. https://arxiv.org/abs/2104.08190

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