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Increasing the speed of polar list decoders

Sarkis, G. et Giard, P. et Vardy, A. et Thibeault, Claude et Gross, W. J.. 2014. « Increasing the speed of polar list decoders ». In 2014 IEEE Workshop on Signal Processing Systems (SiPS) (Belfast, Ireland, Oct. 20-22, 2014) Piscataway, N. J., USA : IEEE.


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In this work, we present a simplified successive cancellation list decoder that uses a Chase-like decoding process to achieve a six time improvement in speed compared to successive cancellation list decoding while maintaining the same errorcorrection performance advantage over standard successivecancellation polar decoders. We discuss the algorithm and detail the data structures and methods used to obtain this speed-up.We also propose an adaptive decoding algorithm that significantly improves the throughput while retaining the error-correction performance. Simulation results over the additive white Gaussian noise channel are provided and show that the proposed system is up to 16 times faster than an LDPC decoder of the same frame size, code rate, and similar error-correction performance, making it more suitable for use as a software decoding solution.

Type de document: Compte rendu de conférence
Thibeault, Claude
Affiliation: Génie électrique
Date de dépôt: 25 févr. 2015 21:50
Dernière modification: 09 mai 2017 18:20

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