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Mutual-information-based successive cancellation list decoding of polar codes

Jha, SK and Deka, K and Rao, S (2019) Mutual-information-based successive cancellation list decoding of polar codes. In: 89th IEEE Vehicular Technology Conference, VTC Spring 2019, 28 April - 1 May 2019, Kuala Lumpur.

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Official URL: https://doi.org/10.1109/VTCSpring.2019.8746488


We present a novel successive cancellation list (SCL) decoding method for the polar codes based on the mutualinformation values of the bit-channels. At short-to-medium blocklengths, only a certain fraction of the bit-channels get polarized. Usually the mutual-information values for the bit- channels are computed for the construction of the code. Using these available mutual-information values, we identify the information bits exhibiting full polarization and having high channel reliability. In the proposed mutual- information-based SCL (MI-SCL) decoder, only one emanating path is considered for such bits. This results in the reduction of the width of the decoding tree. Simulation results confirm the impressive performance of the MI-SCL decoder specially with concatenated cyclic redundancy check codes.

Item Type: Conference Paper
Publication: IEEE Vehicular Technology Conference
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords: Decoding, Channel reliability; Cyclic redundancy check codes; Decoding methods; Full polarization; Information bit; List decoding; Mutual informations; Successive cancellation, Concatenated codes
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Division of Interdisciplinary Sciences > Robert Bosch Centre for Cyber Physical Systems
Date Deposited: 30 Nov 2022 10:09
Last Modified: 30 Nov 2022 10:09
URI: https://eprints.iisc.ac.in/id/eprint/78343

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