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Analytical investigations on carrier phase recovery in dispersion-unmanaged n-PSK coherent optical communication systems
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Xu, Tianhua, Jacobsen, Gunnar, Popov, Sergei, Li, Jie, Liu, Tiegen, Zhang, Yimo and Bayvel, Polina (2016) Analytical investigations on carrier phase recovery in dispersion-unmanaged n-PSK coherent optical communication systems. Photonics, 3 (4). 51. doi:10.3390/photonics3040051 ISSN 2304-6732.
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Official URL: http://dx.doi.org/10.3390/photonics3040051
Abstract
Using coherent optical detection and digital signal processing, laser phase noise and equalization enhanced phase noise can be effectively mitigated using the feed-forward and feed-back carrier phase recovery approaches. In this paper, theoretical analyses of feed-back and feed-forward carrier phase recovery methods have been carried out in the long-haul high-speed n-level phase shift keying (n-PSK) optical fiber communication systems, involving a one-tap normalized least-mean-square (LMS) algorithm, a block-wise average algorithm, and a Viterbi-Viterbi algorithm. The analytical expressions for evaluating the estimated carrier phase and for predicting the bit-error-rate (BER) performance (such as the BER floors) have been presented and discussed in the n-PSK coherent optical transmission systems by considering both the laser phase noise and the equalization enhanced phase noise. The results indicate that the Viterbi-Viterbi carrier phase recovery algorithm outperforms the one-tap normalized LMS and the block-wise average algorithms for small phase noise variance (or effective phase noise variance), while the one-tap normalized LMS algorithm shows a better performance than the other two algorithms for large phase noise variance (or effective phase noise variance). In addition, the one-tap normalized LMS algorithm is more sensitive to the level of modulation formats. Keywords: coherent optical detection; optical fiber communication; carrier phase recovery; feed-back and feed-forward; laser phase noise; equalization enhanced phase noise; n-level phase shift keying
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, Phase shift keying | ||||||
Journal or Publication Title: | Photonics | ||||||
Publisher: | MDPI | ||||||
ISSN: | 2304-6732 | ||||||
Official Date: | 24 September 2016 | ||||||
Dates: |
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Volume: | 3 | ||||||
Number: | 4 | ||||||
Article Number: | 51 | ||||||
DOI: | 10.3390/photonics3040051 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 27 October 2017 | ||||||
Date of first compliant Open Access: | 27 October 2017 | ||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), Seventh Framework Programme (European Commission) (FP7), Sweden. VetenskapsrĂĄdet [Research Council] | ||||||
Grant number: | EP/J017582/1 (EPSC), GRIFFON, No. 324391, ICONE, No. 608099) (FP7), No. 0379801 (Sweden. VetenskapsrĂĄdet [Research Council]) |
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