Log-Likelihood Ratio Calculation Using 3-Bit Soft-Decision for Error Correction in Visible Light Communication Systems
Summary :
Forward Error Correction (FEC) schemes have played an important role in intensity-modulation direct-detection (IM/DD) Visible Light Communication (VLC) systems. While hard-decision FEC schemes are inferior to soft-decision FEC codes in terms of decoding performance, they are widely used in these VLC systems because receivers are only capable of recognizing logical values 0 and 1. In this letter, we propose a method to calculate the log-likelihood ratios (LLR) values which are used as input of soft-decision FEC decoders. Simulation results show that Polar decoder using proposed method performs better than that of using the hard-decision technique.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.12 pp.2210-2212
- Publication Date
- 2018/12/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E101.A.2210
- Type of Manuscript
- Special Section LETTER (Special Section on Information Theory and Its Applications)
- Category
- Communication Theory and Signals
Authors
Dinh-Dung LE
Nara Institute of Science and Technology
Duc-Phuc NGUYEN
Nara Institute of Science and Technology
Thi-Hong TRAN
Nara Institute of Science and Technology
Yasuhiko NAKASHIMA
Nara Institute of Science and Technology
Keyword
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Dinh-Dung LE, Duc-Phuc NGUYEN, Thi-Hong TRAN, Yasuhiko NAKASHIMA, "Log-Likelihood Ratio Calculation Using 3-Bit Soft-Decision for Error Correction in Visible Light Communication Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E101-A, no. 12, pp. 2210-2212, December 2018, doi: 10.1587/transfun.E101.A.2210.
Abstract: Forward Error Correction (FEC) schemes have played an important role in intensity-modulation direct-detection (IM/DD) Visible Light Communication (VLC) systems. While hard-decision FEC schemes are inferior to soft-decision FEC codes in terms of decoding performance, they are widely used in these VLC systems because receivers are only capable of recognizing logical values 0 and 1. In this letter, we propose a method to calculate the log-likelihood ratios (LLR) values which are used as input of soft-decision FEC decoders. Simulation results show that Polar decoder using proposed method performs better than that of using the hard-decision technique.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E101.A.2210/_p
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@ARTICLE{e101-a_12_2210,
author={Dinh-Dung LE, Duc-Phuc NGUYEN, Thi-Hong TRAN, Yasuhiko NAKASHIMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Log-Likelihood Ratio Calculation Using 3-Bit Soft-Decision for Error Correction in Visible Light Communication Systems},
year={2018},
volume={E101-A},
number={12},
pages={2210-2212},
abstract={Forward Error Correction (FEC) schemes have played an important role in intensity-modulation direct-detection (IM/DD) Visible Light Communication (VLC) systems. While hard-decision FEC schemes are inferior to soft-decision FEC codes in terms of decoding performance, they are widely used in these VLC systems because receivers are only capable of recognizing logical values 0 and 1. In this letter, we propose a method to calculate the log-likelihood ratios (LLR) values which are used as input of soft-decision FEC decoders. Simulation results show that Polar decoder using proposed method performs better than that of using the hard-decision technique.},
keywords={},
doi={10.1587/transfun.E101.A.2210},
ISSN={1745-1337},
month={December},}
Copy
TY - JOUR
TI - Log-Likelihood Ratio Calculation Using 3-Bit Soft-Decision for Error Correction in Visible Light Communication Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2210
EP - 2212
AU - Dinh-Dung LE
AU - Duc-Phuc NGUYEN
AU - Thi-Hong TRAN
AU - Yasuhiko NAKASHIMA
PY - 2018
DO - 10.1587/transfun.E101.A.2210
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E101-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2018
AB - Forward Error Correction (FEC) schemes have played an important role in intensity-modulation direct-detection (IM/DD) Visible Light Communication (VLC) systems. While hard-decision FEC schemes are inferior to soft-decision FEC codes in terms of decoding performance, they are widely used in these VLC systems because receivers are only capable of recognizing logical values 0 and 1. In this letter, we propose a method to calculate the log-likelihood ratios (LLR) values which are used as input of soft-decision FEC decoders. Simulation results show that Polar decoder using proposed method performs better than that of using the hard-decision technique.
ER -
English
