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Improved carrier phase recovery for high-capacity optical communication systems with high-order modulation formats
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Zhang, Yunfan, Liu, Tiegen, Jin, Cenqin, Xu, Tongyang, Tan, Mingming, Zhao, Jian and Xu, Tianhua (2024) Improved carrier phase recovery for high-capacity optical communication systems with high-order modulation formats. Optics Communications, 557 . 130326. doi:10.1016/j.optcom.2024.130326 ISSN 0030-4018.
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Official URL: https://doi.org/10.1016/j.optcom.2024.130326
Abstract
A modified Viterbi-Viterbi (MVV) carrier phase recovery (CPR) algorithm is comprehensively studied based on the quadrature phase-shift-keying (QPSK) partition scheme. By improving the QPSK partition scheme for the 16-ary quadrature amplitude modulation (16QAM), MVV algorithm is developed for the optical fiber communication systems with the modulation formats of dual-polarization 64-QAM (DP-64QAM) and DP-256QAM. Numerical simulations have been carried out in a 9-channel Nyquist-spaced 32-Gbaud optical transmission system for different modulation formats and the performance of MVV CPR with respect to pilot-aided (PA) CPR has been examined. Results show that MVV CPR can significantly mitigate the laser phase noise in the system using high-order modulation formats. Compared to PA CPR, MVV CPR performs better with the increase of the transmission distance, where the impact of equalization enhanced phase noise has to be taken into account. Furthermore, MVV has been compared with other CPR approaches in terms of the performance and the computational complexity.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Optical fiber communication, Carrier waves, Amplitude modulation, Electronic noise, Electronic interference, Signal processing -- Digital techniques | ||||||||||||||||||
Journal or Publication Title: | Optics Communications | ||||||||||||||||||
Publisher: | Elsevier BV | ||||||||||||||||||
ISSN: | 0030-4018 | ||||||||||||||||||
Official Date: | 15 April 2024 | ||||||||||||||||||
Dates: |
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Volume: | 557 | ||||||||||||||||||
Article Number: | 130326 | ||||||||||||||||||
DOI: | 10.1016/j.optcom.2024.130326 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 22 January 2024 | ||||||||||||||||||
Date of first compliant Open Access: | 22 January 2024 | ||||||||||||||||||
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