Irregular Polar Coding for Complexity-Constrained Lightwave Systems

Next-generation fiber-optic communications call for ultra-reliable forward error correction codes that are capable of low-power and low-latency decoding. In this paper, we propose a new class of polar codes, whose polarization units are irregularly pruned to reduce computational complexity and decod...

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Bibliographic Details
Published in:Journal of lightwave technology 2018-06, Vol.36 (11), p.2248-2258
Main Authors: Koike-Akino, Toshiaki, Cao, Congzhe, Wang, Ye, Draper, Stark C., Millar, David S., Kojima, Keisuke, Parsons, Kieran, Galdino, Lidia, Elson, Daniel J., Lavery, Domanic, Bayvel, Polina
Format: Article
Language:English
Subjects:
Binary system
Codes
Coherent fiber-optic communications
Complexity
Complexity theory
complexity/latency reduction
Decoding
Encoding
Error correcting codes
Error correction
Error correction & detection
FEC
Fiber optics
Forward error correction
irregular degree
Iterative decoding
Maximum likelihood decoding
Optical fibers
polar coding
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Summary:Next-generation fiber-optic communications call for ultra-reliable forward error correction codes that are capable of low-power and low-latency decoding. In this paper, we propose a new class of polar codes, whose polarization units are irregularly pruned to reduce computational complexity and decoding latency without sacrificing error correction performance. We then experimentally demonstrate that the proposed irregular polar codes can outperform state-of-the-art low-density parity-check (LDPC) codes, while decoding complexity and latency can be reduced by at least 30% and 70%, respectively, versus regular polar codes, while also obtaining a marginal performance improvement.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2018.2802539