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Soft list decoding of polar codes

Soft list decoding of polar codes
Soft list decoding of polar codes
Soft-output (SO) decoding is proposed for the Logarithmic Successive Cancellation List (Log-SCL) polar decoder for the first time, by exploiting the left-to-right propagation of the Belief Propagation (BP) decoder, which opens new avenues
for its employment in powerful turbo-receivers. In the case of decoding a half-rate polar code having a block length of 1024 bits, the proposed soft list polar decoder achieves a 1:5 dB Block Error Ratio (BLER) performance gain, 50% latency improvement and 26% complexity reduction, compared to the state-of-the-art SO Soft Cancellation (SCAN) polar decoder in a polar-coded Multiple-Input Multiple-Output (MIMO) system. Furthermore, we conceive a Memory-Efficient (ME) soft list polar decoder, which requires only 16% of the soft list polar decoder’s memory, at the cost of slightly increased latency and complexity.
Belief propagation (BP), polar codes, soft decoding, successive cancellation list (SCL) decoding
0018-9545
13921-13926
Xiang, Luping
56d951c0-455e-4a67-b167-f6c8233343b1
Liu, Yusha
711a72e8-e8be-4be4-a79d-ea1413e7012a
Kaykac Egilmez, Zeynep Burcin
071b0c1a-a884-45fc-8dc4-e706c9972a69
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xiang, Luping
56d951c0-455e-4a67-b167-f6c8233343b1
Liu, Yusha
711a72e8-e8be-4be4-a79d-ea1413e7012a
Kaykac Egilmez, Zeynep Burcin
071b0c1a-a884-45fc-8dc4-e706c9972a69
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xiang, Luping, Liu, Yusha, Kaykac Egilmez, Zeynep Burcin, Maunder, Robert, Yang, Lieliang and Hanzo, Lajos (2020) Soft list decoding of polar codes. IEEE Transactions on Vehicular Technology, 69 (11), 13921-13926, [9185047]. (doi:10.1109/TVT.2020.3021258).

Record type: Article

Abstract

Soft-output (SO) decoding is proposed for the Logarithmic Successive Cancellation List (Log-SCL) polar decoder for the first time, by exploiting the left-to-right propagation of the Belief Propagation (BP) decoder, which opens new avenues
for its employment in powerful turbo-receivers. In the case of decoding a half-rate polar code having a block length of 1024 bits, the proposed soft list polar decoder achieves a 1:5 dB Block Error Ratio (BLER) performance gain, 50% latency improvement and 26% complexity reduction, compared to the state-of-the-art SO Soft Cancellation (SCAN) polar decoder in a polar-coded Multiple-Input Multiple-Output (MIMO) system. Furthermore, we conceive a Memory-Efficient (ME) soft list polar decoder, which requires only 16% of the soft list polar decoder’s memory, at the cost of slightly increased latency and complexity.

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More information

Accepted/In Press date: 31 August 2020
e-pub ahead of print date: 2 September 2020
Keywords: Belief propagation (BP), polar codes, soft decoding, successive cancellation list (SCL) decoding

Identifiers

Local EPrints ID: 443719
URI: http://eprints.soton.ac.uk/id/eprint/443719
ISSN: 0018-9545
PURE UUID: 1bdb29c5-7db9-4b19-921a-e19256bd81ad
ORCID for Luping Xiang: ORCID iD orcid.org/0000-0003-1465-6708
ORCID for Robert Maunder: ORCID iD orcid.org/0000-0002-7944-2615
ORCID for Lieliang Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 09 Sep 2020 16:34
Last modified: 13 Apr 2021 02:05

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