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Georgia Ntogari
Researcher at National and Kapodistrian University of Athens
Publications - 10
Citations - 408
Georgia Ntogari is an academic researcher from National and Kapodistrian University of Athens. The author has contributed to research in topics: Optical wireless & Wireless. The author has an hindex of 8, co-authored 10 publications receiving 379 citations.
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Journal ArticleDOI
Combining Illumination Dimming Based on Pulse-Width Modulation With Visible-Light Communications Based on Discrete Multitone
TL;DR: It was shown that practical communication is only feasible when the line rate of the dimming modulation is at least twice the frequency assigned to the largest multitone subcarrier frequency, and under this constraint and when using a suitably modified demodulation scheme, dimming does not influence the data transmission.
Proceedings ArticleDOI
Visible-light communication system enabling 73 Mb/s data streaming
Olivier Bouchet,Pascal Porcon,Michael M. Wolf,Liane Grobe,Joachim W. Walewski,Stefan Nerreter,Klaus-Dieter Langer,Luz Fernandez,Jelena Vucic,Thomas Kamalakis,Georgia Ntogari,Eric Gueutier +11 more
TL;DR: An experimental demonstration of an indoor visible-light wireless link including a MAC layer protocol adapted to optical wireless communications systems that operates at 84 Mb/s broadcast and was successfully used to transmit three highdefinition video streams.
Journal ArticleDOI
Empirical Volterra-Series Modeling of Commercial Light-Emitting Diodes
TL;DR: A reverse-engineering approach is presented that is based on Volterra expansions of the electro-optical characteristic function of LEDs, enabling the introduction of a realistic empirical model for commercial devices.
Proceedings ArticleDOI
Optical wireless communications for broadband access in home area networks
Klaus-Dieter Langer,J. Grubor,Olivier Bouchet,M. El Tabach,Joachim W. Walewski,Sebastian Randel,Martin Franke,Stefan Nerreter,Dominic O'Brien,Grahame Faulkner,Ioannis Neokosmidis,Georgia Ntogari,Michael M. Wolf +12 more
TL;DR: The contribution presents ideas and approaches for broadband optical wireless communications using infrared Gb/s hotspots and 100 Mb/s information broadcasting by means of interior lighting based on white-light LEDs.
Journal ArticleDOI
Performance analysis of space time block coding techniques for indoor optical wireless systems
TL;DR: It is shown that STBC techniques can be used to increase the capacity of diffuse optical wireless systems, improve their coverage and decrease the required optical power at the transmitter.