Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Cristian Bogdan Czegledi"'
Autor:
Jonas Gustavsson, Per Ligander, Dimitris Siomos, Mikael Horberg, Martin Sjodin, Daniel Sjöberg, Dimitris Polydorou, Jan Sandberg, Cristian Bogdan Czegledi, Jonas Hansryd
Publikováno v:
2020 IEEE/MTT-S International Microwave Symposium (IMS).
Wireless backhaul using line-of-sight MIMO (LOS-MIMO) has the potential to support the increased data-rate demands brought by the introduction of the fifth generation of mobile access technology. In this paper, we present results from an outdoor 1.5-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a14b38e7dc97abfe472c9811dedbeced
https://doi.org/10.1109/ims30576.2020.9223907
https://doi.org/10.1109/ims30576.2020.9223907
Autor:
Erik Agrell, Cristian Bogdan Czegledi, Seb J. Savory, Gabriele Liga, Polina Bayvel, Magnus Karlsson, Domanic Lavery
Digital backpropagation (DBP) is a promising digital-domain technique to mitigate Kerr-induced nonlinear interference. While it successfully removes deterministic signal-signal interactions, the performance of ideal DBP is limited by stochastic effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c0ce58d836288bb49862b74a9b92ed7
Publikováno v:
Journal of Lightwave Technology. 34:3354-3364
The state of polarization and the carrier phase drift dynamically during transmission in a random fashion in coherent optical fiber communications. The typical digital signal processing solution to mitigate these impairments consists of two separate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7721f39f68c691219a15c8f3dfbdf45
https://doi.org/10.1109/jlt.2016.2564427
https://doi.org/10.1109/jlt.2016.2564427
Autor:
Cristian Bogdan Czegledi, Ronen Dar
Publikováno v:
ECOC
We propose a modified Volterra series digital backpropagation algorithm that accounts for polarization-mode dispersion (PMD) effects. The algorithm accounts only for nonlinear terms that are PMD-insensitive, leading to both performance enhancement an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f10d9fb0dffd64382cdfb281c334f7dc
https://doi.org/10.1109/ecoc.2017.8346173
https://doi.org/10.1109/ecoc.2017.8346173
Publikováno v:
IEEE Transactions on Communications. 62:3274-3284
In this paper, a new method for power-efficient intersymbol interference-free transmission over the bandlimited intensity-modulation direct-detection channel is proposed. A new time-varying bias signal is added to the transmitted signal to make it no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb1063f1202c1a93c0530fe3ef8bc18c
https://doi.org/10.1109/tcomm.2014.2349909
https://doi.org/10.1109/tcomm.2014.2349909
Publikováno v:
OFC
We propose and validate a discrete-time channel model for the temporal drift of the absolute polarization state and polarization-mode dispersion for coherent fiber optic systems. The model can be used in simulations to test and develop DSP for cohere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39e70318000a5644a06c002ecfa4c9ad
https://doi.org/10.1364/ofc.2017.th3f.2
https://doi.org/10.1364/ofc.2017.th3f.2
Publikováno v:
Scientific Reports
A theoretical framework is introduced to model the dynamical changes of the state of polarization during transmission in coherent fibre-optic systems. The model generalizes the one-dimensional phase noise random walk to higher dimensions, accounting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d63337c74fb6b42a1a59ced5b8600e0
http://arxiv.org/abs/1507.00953
http://arxiv.org/abs/1507.00953
Publikováno v:
Advanced Photonics 2015.
We present and discuss a real four-dimensional (4d) channel model for coherent links, and compare it with the more conventional complex two-dimensional (Jones matrix) model.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccb1f664eea481276874b52f44973654
https://doi.org/10.1364/sppcom.2015.spm3e.2
https://doi.org/10.1364/sppcom.2015.spm3e.2
Autor:
Cristian Bogdan Czegledi, Robert I. Killey, Gabriel Saavedra, Erik Agrell, Polina Bayvel, Lidia Galdino, Daniel Semrau, Domanic Lavery
Publikováno v:
Optics Express. 25:4564
This paper investigates the impact of transceiver noise on the performance of digital back-propagation (DBP). A generalized expression to estimate the signal-to-noise ratio (SNR) obtained using DBP in the presence of transceiver noise is described. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0bc2dad9a960f28448e75f3953c0e46
https://doi.org/10.1364/oe.25.004564
https://doi.org/10.1364/oe.25.004564
Publikováno v:
2014 The European Conference on Optical Communication (ECOC).
A new, power-efficient signaling method for intersymbol interference-free transmission over the bandlimited intensity-modulation direct-detection channel is proposed. The method utilizes pulse-amplitude modulation with a sinusoidal bias function and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33a4c779269c16fc1d9a840b08520a81
https://doi.org/10.1109/ecoc.2014.6963983
https://doi.org/10.1109/ecoc.2014.6963983