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Fast and Flexible Successive-Cancellation List Decoders for Polar Codes by Hashemi, Seyyed Ali; Condo, Carlo; Gross, Warren J. is a scholarly article available to read on EtoBox.

What is Fast and Flexible Successive-Cancellation List Decoders for Polar Codes about?

Polar codes have gained significant amount of attention during the past few years and have been selected as a coding scheme for the next generation of mobile broadband standard. Among decoding schemes, successive-cancellation list (SCL) decoding provides a reasonable trade-off between the error-correction performance and hardware implementation complexity when used to decode polar codes, at the cost of limited throughput. The simplified SCL (SSCL) and its extension SSCL-SPC increase the speed of decoding by removing redundant calculations when encountering particular information and frozen bit patterns (rate one and single parity check codes), while keeping the error-correction performance unaltered. In this paper, we improve SSCL and SSCL-SPC by proving that the list size imposes a specific number of bit estimations required to decode rate one and single parity check codes. Thus, the number of estimations can be limited while guaranteeing exactly the same error-correction performance as if all bits of the code were estimated. We call the new decoding algorithms Fast-SSCL and Fast-SSCL-SPC. Moreover, we show that the number of bit estimations in a practical application can be tuned

Author

Hashemi, Seyyed Ali; Condo, Carlo; Gross, Warren J.

Published

2017

Language

EN