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- Alfredsson, Arni,1989Chalmers tekniska högskola,Chalmers University of Technology (author)
Pilot Distributions for Joint-Channel Carrier-Phase Estimation in Multichannel Optical Communications
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- 2020
- electronicrdacarrier
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- LIBRIS-ID:oai:research.chalmers.se:093c51e1-d253-4800-81b8-6ad34ae684cd
- https://doi.org/10.1109/JLT.2020.2995476DOI
- https://research.chalmers.se/publication/519034URI
- https://research.chalmers.se/publication/519129URI
- https://research.chalmers.se/publication/517096URI
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- Language:English
- Summary in:English
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Notes
- Joint-channel carrier-phase estimation can improve the performance of multichannel optical communication systems. In the case of pilot-aided estimation, the pilots are distributed over a two-dimensional channel-time symbol block that is transmitted through multiple channels. However, suboptimal pilot distributions reduce the effectiveness of the carrier-phase estimation and thus result in unnecessary pilot overhead, which reduces the overall information rate of the system. It is shown that placing pilots identically in all channels is suboptimal in general. By instead optimizing the pilot distribution, the mean squared error of the phase-noise estimates can be decreased by over 90% in some cases. Moreover, it is shown that the achievable information rate can be increased by up to 0.05, 0.16, and 0.41 bits per complex symbol for dual-polarization 20 GBd transmission of 64-ary, 256-ary, and 1024-ary quadrature amplitude modulation over 20 four-dimensional channels, respectively, assuming a total laser linewidth of 200 kHz.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Telekommunikation hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Kommunikationssystem hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
- phase noise
- fiber-optic communications
- multichannel transmission
- Kalman filtering
- Frequency combs
- wavelength-division multiplexing
- signal processing
- pilot
- optimization
- space-division multiplexing
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- Agrell, Erik,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)agrell (author)
- Karlsson, Magnus,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)magkar (author)
- Wymeersch, Henk,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)henkw (author)
- Chalmers tekniska högskola (creator_code:org_t)
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- In:Journal of Lightwave Technology38:17, s. 4656-46630733-87241558-2213
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