Browsing Publikační činnost ČVUT by Author "Bohata J."
Now showing items 1-11 of 11
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Exact modeling of photonic crystal fibers for determination of fundamental properties
Author: Suslov D.; Komanec M.; Němeček T.; Bohata J.; Zvánovec S.
(ELSEVIER SCIENCE INC, 2020)We present a simple but highly accurate modeling technique for real photonic crystal fibers (PCFs) characterization. We determine the influence caused by idealized model parameters. Our technique can be applied to arbitrary ... -
Experimental all-optical relay-assisted FSO link with regeneration and forward scheme for ultra-short pulse transmission
Author: Nor N.A.M.; Komanec M.; Bohata J.; Ghassemlooy Z.; Bhatnagar M.R.; Zvánovec S.
(Optical Society of America, 2019)This paper presents experimental results for an all-optical free-space optical (FSO) relay-assisted system by employing an all-optical regenerate and forward (AORF) scheme in order to increase the transmission link span. ... -
Experimental analysis of a triple-hop relay-assisted FSO system with turbulence
Author: Nor N.A.M.; Ghassemlooy Z.; Zvánovec S.; Khalighi M.-A.; Bhatnagar M.R.; Bohata J.; Komanec M.
(Elsevier Science Publishers B.V., 2019)This paper outlines experimental investigation of the performance of the wireless optical network based on an all-optical triple-hop free space optical (FSO) communications employing amplify-and-forward relaying under the ... -
Experimental photonic 40 - 90 GHz millimetre-wave signal generation and 10 Gb/s 32-QAM signal transmission over hybrid fiber/FSO 5G networks
Author: Vallejo L.; Ortega B.; Bohata J.; Zvánovec S.; Almenar A.
(IEEE, 2019)We experimentally demonstrate photonic millimetre wave signal generation and distribution over hybrid networks based on wired and wireless links. Optical frequency multiplication based on carrier-suppressed modulation has ... -
Impact of Channel Correlation on Different Performance Metrics of OSSK-Based FSO Systems
Author: Priyadarshani R.; Jaiswal A.; Bhatnagar M.R.; Bohata J.; Zvánovec S.; Ghassemlooy Z.
(Institute of Electrical and Electronics Engineers, 2020)In this paper, we study the impact of correlation on the bit error rate (BER) and the channel capacity of a free-space optical (FSO) multiple-input-multiple-output (MIMO) system employing optical space shift keying (OSSK) ... -
M-QAM transmission over hybrid microwave photonic links at the K-band
Author: Nguyen Dong N.; Bohata J.; Spáčil J.; Dousek D.; Komanec M.; Zvánovec S.; Ghassemlooy Z.; Ortega B.
(Optical Society of America, 2019)Two experimental configurations of a hybrid K-band (25 GHz) microwave photonic link (MPL) are investigated for seamless broadband wireless access networks. Experimental configurations consist of optical fiber, free-space ... -
On Optically Pre-amplified FSO-MISO Non-identical Links with Correlation: Experiment and Analysis
Author: Priyadarshani R.; Bhatnagar M.; Bohata J.; Zvánovec S.; Ghassemlooy Z.
(American Institute of Physics and Magnetic Society of the IEEE, 2019)In this paper, various link characteristics and bit error rate (BER) performance of a free-space optical (FSO) multiple-input-single-output (MISO) system with repetition cod- ing (RC) is investigated both experimentally ... -
Optical Hybrid Fiber/Free-Space and 25 GHz Wireless Transmission using LTE M-QAM Signals
Author: Nguyen Dong N.; Bohata J.; Komanec M.; Zvánovec S.; Ortega B.; Ghassemlooy Z.
(Instituto de Telecomunicaçoes - Lisboa, 2019)We experimentally demonstrate a seamless hybrid transmission of radio-over-fiber (RoF), radio-over-free-space optics (RoFSO) and millimeter wave wireless link using long-term evolution (LTE) 4/16/64-QAM signals for broadband ... -
Precise Measuring Test Bed for Characterization of Mode Field Distribution in Different types of Multimode Fibers
Author: Bohata J.; Němeček T.; Komanec M.; Zvánovec S.; Kormaňák P.; Beran J.; Brouček J.
(Zeithamlová Milena Ing. - Agentura Action M, 2019)In this paper we present experimental results from precise measurements of mode field distribution in various commercial multimode (MM) fiber types. We characterize the mode field distribution by the encircled flux (EF) ... -
Radio over 50 km Fiber and Joint 80 m FSO/Wireless Links Using Photonic Frequency Doubling for 5G
Author: Bohata J.; Spáčil J.; Nguyen Dong N.; Zvánovec S.; Vallejo L.; Ortega B.
(American Institute of Physics and Magnetic Society of the IEEE, 2019)We present the experimental demonstration of photonic doubling to achieve 25 GHz millimeter wave signal generation, following the 5th generation network frequency band recommendations. A hybrid optical network combining ... -
Seamless 25 GHz Transmission of LTE 4/16/64-QAM Signals Over Hybrid SMF/FSO and Wireless Link
Author: Nguyen Dong N.; Bohata J.; Komanec M.; Zvánovec S.; Ortega B.; Ghassemlooy Z.
(IEEE LEOS JLT Editorial Office, 2019)We propose and experimentally demonstrate a photonics-assisted converged radio-over-fiber (RoF), radio-over-free-space optics (RoFSO) and millimeter-wave (MMW) wireless transmission system for use in broadband wireless ...