Optimization of Transmitter-Side Signal Rotations in the Presence of Laser Phase Noise

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Fältnamn	Indikatorer	Metadata
000		03362naa a2200409 4500
001		oai:research.chalmers.se:2ebf7d1b-0e90-4635-8072-3b576d69d82c
003		SwePub
008		200316s2020 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://research.chalmers.se/publication/5192512 URI
024	7	a https://research.chalmers.se/publication/5159542 URI
024	7	a https://doi.org/10.1109/JLT.2020.29818832 DOI
040		a (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Alfredsson, Arni,d 1989u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)arnia
245	1 0	a Optimization of Transmitter-Side Signal Rotations in the Presence of Laser Phase Noise
264	1	c 2020
338		a electronic2 rdacarrier
520		a The effects of transmitter-side multidimensional signal rotations on the performance of multichannel optical transmission are studied in the presence of laser phase noise. In particular, the laser phase noise is assumed to be uncorrelated between channels. To carry out this study, a simple multichannel laser-phase-noise model that has been experimentally validated for weakly-coupled multicore-fiber transmission is considered. As the considered rotation scheme is intended to work in conjunction with receiver-side carrier phase estimation (CPE), the model is modified to further assume that imperfect CPE has taken place, leaving residual phase noise in the processed signal. Based on this model, two receiver structures are derived and used to numerically optimize transmitter-side signal rotations through Monte Carlo simulations. For reasonable amounts of residual phase noise, rotations based on Hadamard matrices are found to be near-optimal for transmission of four-dimensional signals. Furthermore, Hadamard rotations can be performed for any dimension that is a power of two. By exploiting this property, an increase of up to 0.25 bit per complex symbol in an achievable information rate is observed for transmission of higher-order constellations.
650	7	a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronikx Telekommunikation0 (SwePub)202042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineeringx Telecommunications0 (SwePub)202042 hsv//eng
653		a rotation
653		a optical communications
653		a Multichannel
653		a signal processing
653		a phase noise
700	1	a Agrell, Erik,d 1965u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)agrell
700	1	a Karlsson, Magnus,d 1967u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)magkar
700	1	a Wymeersch, Henk,d 1976u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)henkw
710	2	a Chalmers tekniska högskola4 org
773	0	t Journal of Lightwave Technologyg 38:15, s. 3850-3858q 38:15<3850-3858x 0733-8724x 1558-2213
856	4	u https://research.chalmers.se/publication/519251/file/519251_Fulltext.pdfx primaryx freey FULLTEXT
856	4 8	u https://research.chalmers.se/publication/519251
856	4 8	u https://research.chalmers.se/publication/515954
856	4 8	u https://doi.org/10.1109/JLT.2020.2981883

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Av författaren/redakt...: Alfredsson, Arni ...; Agrell, Erik, 19 ...; Karlsson, Magnus ...; Wymeersch, Henk, ...

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