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Shestopal Y.,State University of Telecommunications
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

In this paper the overview of turbo coding technique applying to orthogonal parallel data transmission via sub-channels is provided and soft-input soft-output maximum a posteriori algorithm is proposed for using in parallel data transmission. © 2016 National University Lviv Polytechnic. Source


Krasko O.,Lviv Polytechnic | Kolodiy R.,Lviv Polytechnic | Khavalko V.,State University of Telecommunications
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

Currently optical access networks are developing towards new converged architecture. Network convergence allows to integrate multiple access networks with different purposes such as home area network, enterprise network and mobile backhaul network. In this paper, we propose a new algorithm of wavelengths rearrangement and load balancing (WRLB) based on optical wavelength-Time division multiple access (OWTDMA). Proposed algorithm improves the flexibility, scalability and energy efficiency of optical access network by using time-frequency resource blocks for frames transmission. © 2016 National University Lviv Polytechnic. Source


Nedashkivskiy O.,State University of Telecommunications
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

The attempt of estimation of quality of Internet services in Ukraine is carried, and also the tasks of researches that will show out our country forth into deserving place in rating of leading countries of the world on Internet services are set. © 2016 National University Lviv Polytechnic. Source


Rozorinov H.,State University of Telecommunications
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

We study the dependence of the optical fibre lifetime on the tension. A method for calculating the elongation of the optical fibre depending on the bending radius is proposed. Recommendations on the bending radius choice of the fibre in the design of optical networks to increase their reliability are given. © 2016 National University Lviv Polytechnic. Source


Belkin M.E.,Moscow State University | Tyschuk Y.,State University of Telecommunications
Proceedings of the 2015 International Conference on Microwave and Photonics, ICMAP 2015 | Year: 2015

Design principles as well as key characteristics simulation results of the VCSEL-based optoelectronic frequency converter using the powerful electronic CAD tool NI AWR Design Environment are presented. A comparison with previously reported modeling results for microwave-band optoelectronic frequency converter using a special optoelectronic CAD tool is highlighted. © 2015 IEEE. Source

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