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A Fast Polar Code List Decoder Architecture Based on Sphere Decoding.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Dec2016, Vol. 63 Issue 12, p2368-2380. 13p. - Publication Year :
- 2016
-
Abstract
- Polar codes are a recently discovered family of capacity-achieving error-correcting codes. Among the proposed decoding algorithms, successive-cancellation list decoding guarantees the best error-correction performance with codes of moderate lengths, but it yields low throughput. Speed-up techniques have been proposed in the past: most of them rely on approximations that degrade the error-correction capability of the algorithm. We propose a speed-up technique for successive-cancellation list decoding of polar codes that is exact for list size of 2, while its approximations bring negligible error-correction performance degradation (<0.05 dB) for other list sizes. A decoder architecture is designed: the proposed technique increases the throughput of a factor of $3.16\times $ , at the cost of 14.2% in area occupation. [ABSTRACT FROM PUBLISHER]
- Subjects :
- *DECODING algorithms
*CYCLIC redundancy check codes
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 63
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 119770992
- Full Text :
- https://doi.org/10.1109/TCSI.2016.2619324