FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems

Ivan B. Djordjevic; Ding Zou

doi:10.1109/ICTON.2017.8024788

FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems

Ivan B. Djordjevic, Ding Zou

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

In this invited paper, we describe a rate-adaptive FEC scheme based on LDPC codes together with its software reconfigurable unified FPGA architecture. By FPGA emulation, we demonstrate that this class of rate-adaptive LDPC codes based on shortening with an overhead from 25% to 42.9% provides a coding gain ranging from 13.08 dB to 14.28 dB at a post-FEC BER of 10^-15 for BPSK transmission. In addition, the proposed rate-adaptive LDPC coding combined with higher-order modulations have been demonstrated including QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, which covers a wide range of signal-to-noise ratios. Furthermore, we apply the unequal error protection by employing different LDPC codes on different bits in 16-QAM and 64-QAM, which results in additional 0.5 dB gain compared to conventional LDPC coded modulation with the same code rate of corresponding LDPC code.

Original language	English (US)
Title of host publication	ICTON 2017 - 19th International Conference on Transparent Optical Networks
Publisher	IEEE Computer Society
ISBN (Electronic)	9781538608586
DOIs	https://doi.org/10.1109/ICTON.2017.8024788
State	Published - Sep 1 2017
Event	19th International Conference on Transparent Optical Networks, ICTON 2017 - Girona, Catalonia, Spain Duration: Jul 2 2017 → Jul 6 2017

Publication series

Name	International Conference on Transparent Optical Networks
ISSN (Electronic)	2162-7339

Other

Other	19th International Conference on Transparent Optical Networks, ICTON 2017
Country/Territory	Spain
City	Girona, Catalonia
Period	7/2/17 → 7/6/17

Keywords

coherent communication
field programmable gate array (FPGA)
low-density parity-check (LDPC)
optical communications

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/ICTON.2017.8024788

Cite this

FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems. / Djordjevic, Ivan B.; Zou, Ding.
ICTON 2017 - 19th International Conference on Transparent Optical Networks. IEEE Computer Society, 2017. 8024788 (International Conference on Transparent Optical Networks).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Djordjevic, IB & Zou, D 2017, FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems. in ICTON 2017 - 19th International Conference on Transparent Optical Networks., 8024788, International Conference on Transparent Optical Networks, IEEE Computer Society, 19th International Conference on Transparent Optical Networks, ICTON 2017, Girona, Catalonia, Spain, 7/2/17. https://doi.org/10.1109/ICTON.2017.8024788

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title = "FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems",

abstract = "In this invited paper, we describe a rate-adaptive FEC scheme based on LDPC codes together with its software reconfigurable unified FPGA architecture. By FPGA emulation, we demonstrate that this class of rate-adaptive LDPC codes based on shortening with an overhead from 25% to 42.9% provides a coding gain ranging from 13.08 dB to 14.28 dB at a post-FEC BER of 10-15 for BPSK transmission. In addition, the proposed rate-adaptive LDPC coding combined with higher-order modulations have been demonstrated including QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, which covers a wide range of signal-to-noise ratios. Furthermore, we apply the unequal error protection by employing different LDPC codes on different bits in 16-QAM and 64-QAM, which results in additional 0.5 dB gain compared to conventional LDPC coded modulation with the same code rate of corresponding LDPC code.",

keywords = "coherent communication, field programmable gate array (FPGA), low-density parity-check (LDPC), optical communications",

author = "Djordjevic, {Ivan B.} and Ding Zou",

note = "Funding Information: This work was supported in part by National Science Foundation (NSF) CIAN ERC (EEC-0812072) as well as ONR MURI program (N00014-13-1-0627). Publisher Copyright: {\textcopyright} 2017 IEEE.; 19th International Conference on Transparent Optical Networks, ICTON 2017 ; Conference date: 02-07-2017 Through 06-07-2017",

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AU - Zou, Ding

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N2 - In this invited paper, we describe a rate-adaptive FEC scheme based on LDPC codes together with its software reconfigurable unified FPGA architecture. By FPGA emulation, we demonstrate that this class of rate-adaptive LDPC codes based on shortening with an overhead from 25% to 42.9% provides a coding gain ranging from 13.08 dB to 14.28 dB at a post-FEC BER of 10-15 for BPSK transmission. In addition, the proposed rate-adaptive LDPC coding combined with higher-order modulations have been demonstrated including QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, which covers a wide range of signal-to-noise ratios. Furthermore, we apply the unequal error protection by employing different LDPC codes on different bits in 16-QAM and 64-QAM, which results in additional 0.5 dB gain compared to conventional LDPC coded modulation with the same code rate of corresponding LDPC code.

AB - In this invited paper, we describe a rate-adaptive FEC scheme based on LDPC codes together with its software reconfigurable unified FPGA architecture. By FPGA emulation, we demonstrate that this class of rate-adaptive LDPC codes based on shortening with an overhead from 25% to 42.9% provides a coding gain ranging from 13.08 dB to 14.28 dB at a post-FEC BER of 10-15 for BPSK transmission. In addition, the proposed rate-adaptive LDPC coding combined with higher-order modulations have been demonstrated including QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, which covers a wide range of signal-to-noise ratios. Furthermore, we apply the unequal error protection by employing different LDPC codes on different bits in 16-QAM and 64-QAM, which results in additional 0.5 dB gain compared to conventional LDPC coded modulation with the same code rate of corresponding LDPC code.

KW - coherent communication

KW - field programmable gate array (FPGA)

KW - low-density parity-check (LDPC)

KW - optical communications

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FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems

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