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Analytical Investig...
Analytical Investigations on Carrier Phase Recovery in Dispersion-Unmanaged n-PSK Coherent Optical Communication Systems
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- Xu, Tianhua (författare)
- University College London, UK; Tianjin University, China
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- Jacobsen, Gunnar (författare)
- RISE,KTH,Material- och nanofysik,Acreo Swedish ICT AB, Sweden,Acreo,KTH Royal Institute of Technology, Sweden
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- Popov, Sergei (författare)
- KTH,Material- och nanofysik,KTH Royal Institute of Technology, Sweden
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- Li, Jie (författare)
- RISE,Acreo
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- Liu, Tiegen (författare)
- Tianjin University, China
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- Zhang, Yimo (författare)
- Tianjin University, China
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- Bayvel, Polina (författare)
- University College London, UK
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(creator_code:org_t)
- 2016-09-24
- 2016
- Engelska.
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Ingår i: Photonics. - : MDPI AG. - 2304-6732. ; 3:4
- Relaterad länk:
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https://www.mdpi.com...
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https://doi.org/10.3...
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https://ri.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Nyckelord
- 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
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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