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Livres
Articles (33)
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Investigating student understanding of operational-amplifier circuits

Papanikolaou, Christos P., Tombras, George S., Van De Bogart, Kevin L., Stetzer, MacKenzie R.

Journal:

American Journal of Physics

Année:

2015

Langue:

english

Fichier:

PDF, 4.23 MB

english, 2015

Dual-hop relaying communications over generalized-K (KG) fading channels

Kostas P. Peppas, Christos K. Datsikas, Hector E. Nistazakis, George S. Tombras

Journal:

Journal of the Franklin Institute

Année:

2010

Langue:

english

Fichier:

PDF, 469 KB

english, 2010

Capacity Analysis of Dual Amplify-and-Forward Relayed Free-Space Optical Communication Systems Over Turbulence Channels With Pointing Errors

Peppas, Kostas P., Stassinakis, Argyris N., Nistazakis, Hector E., Tombras, George S.

Journal:

Journal of Optical Communications and Networking

Année:

2013

Langue:

english

Fichier:

PDF, 831 KB

english, 2013

[IEEE 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications - Athens, Greece (2007.09.3-2007.09.7)] 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications - Dual-Hop Relaying Networks over Nakagami-M Fading Channels

Datsikas, Christos K., Tombras, George S., Sagias, Nikos C., Lazarakis, Fotis I., Alexandropoulos, George C., Alexandridis, Antonis A., Dangakis, Kostas P.

Année:

2007

Langue:

english

Fichier:

PDF, 204 KB

english, 2007

A Novel Chaotic System without Equilibrium: Dynamics, Synchronization, and Circuit Realization

Azar, Ahmad Taher, Volos, Christos, Gerodimos, Nikolaos A., Tombras, George S., Pham, Viet-Thanh, Radwan, Ahmed G., Vaidyanathan, Sundarapandian, Ouannas, Adel, Munoz-Pacheco, Jesus M.

Journal:

Complexity

Année:

2017

Langue:

english

Fichier:

PDF, 4.53 MB

english, 2017

DF Relayed Subcarrier FSO Links over Malaga Turbulence Channels with Phase Noise and Non-Zero Boresight Pointing Errors

Varotsos, George, Nistazakis, Hector, Gappmair, Wilfried, Sandalidis, Harilaos, Tombras, George

Journal:

Applied Sciences

Année:

2018

Langue:

english

Fichier:

PDF, 2.84 MB

english, 2018

Block error rate performance of OOK FSO links over gamma-gamma turbulence channels with generalized nonzero boresight pointing errors

Nistazakis, Hector, Ninos, M., Sandalidis, Harilaos, Stassinakis, A., Tombras, George

Journal:

IET Optoelectronics

Année:

2018

Langue:

english

Fichier:

PDF, 807 KB

english, 2018

Experimental Implementation and Theoretical Investigation of a Vanadium Dioxide Optical Filter for Bit Error Rate Enhancement of Enhanced Space Shift Keying Visible Light Communication Systems

Manousou, Dimitra K., Stassinakis, Argyris N., Syskakis, Emmanuel, Nistazakis, Hector E., Gardelis, Spiros, Tombras, George S.

Journal:

Computation

Année:

2019

Langue:

english

Fichier:

PDF, 3.18 MB

english, 2019

Average channel capacity for generalized-selection combining RAKE receivers

Nikos C. Sagias, Panagiotis Varzakas, George S. Tombras, George K. Karagiannidis

Journal:

Transactions on Emerging Telecommunications Technologies

Année:

2004

Langue:

english

Fichier:

PDF, 72 KB

english, 2004

Average output SNR of equal-gain diversity receivers over correlative Weibull fading channels

Dimitris A. Zogas, Nikos C. Sagias, George S. Tombras, George K. Karagiannidis

Journal:

Transactions on Emerging Telecommunications Technologies

Année:

2005

Langue:

english

Fichier:

PDF, 95 KB

english, 2005

Error rate performance analysis of dual-hop relaying transmissions over generalized-K fading channels

Christos K. Datsikas, Kostas P. Peppas, Fotis I. Lazarakis, George S. Tombras

Journal:

AEU - International Journal of Electronics and Communications

Année:

2010

Langue:

english

Fichier:

PDF, 655 KB

english, 2010

On the cascaded Weibull fading channel model

Nikos C. Sagias, George S. Tombras

Journal:

Journal of the Franklin Institute

Année:

2007

Langue:

english

Fichier:

PDF, 497 KB

english, 2007

Symbol error probability of decode and forward cooperative diversity in Nakagami-m fading channels

Diomidis S. Michalopoulos, George K. Karagiannidis, George S. Tombras

Journal:

Journal of the Franklin Institute

Année:

2008

Langue:

english

Fichier:

PDF, 190 KB

english, 2008

Higher Order Capacity Statistics of Diversity Receivers

Nikos C. Sagias, Fotis I. Lazarakis, Antonis A. Alexandridis, Kostas P. Dangakis, George S. Tombras

Journal:

Wireless Personal Communications

Année:

2011

Langue:

english

Fichier:

PDF, 649 KB

english, 2011

Serial relaying communications over generalized-gamma fading channels

Christos K. Datsikas, Kostas P. Peppas, Nikos C. Sagias, George S. Tombras

Journal:

Wireless Communications and Mobile Computing

Année:

2012

Langue:

english

Fichier:

PDF, 437 KB

english, 2012

On the use of wavelength and time diversity in optical wireless communication systems over gamma–gamma turbulence channels

Hector E. Nistazakis, George S. Tombras

Journal:

Optics & Laser Technology

Année:

2012

Langue:

english

Fichier:

PDF, 895 KB

english, 2012

Capacity estimation of optical wireless communication systems over moderate to strong turbulence channels

Nistazakis, Hector E., Tombras, George S., Tsigopoulos, Antreas D., Karagianni, Evangelia A., Fafalios, Michael E.

Journal:

Journal of Communications and Networks

Année:

2009

Langue:

english

Fichier:

PDF, 1.09 MB

english, 2009

[IEEE 2010 14th Panhellenic Conference on Informatics (PCI) - Tripoli, Greece (2010.09.10-2010.09.12)] 2010 14th Panhellenic Conference on Informatics - Bit Error and Outage Probability of Serial Relaying Communication Systems

Datsikas, Christos K., Peppas, Kostas P., Sagias, Nikos C., Tselikas, Nikolaos D., Tombras, George S.

Année:

2010

Langue:

english

Fichier:

PDF, 327 KB

english, 2010

1-Bit delayed encoding improves continuously variable slope delta modulator performance

TOMBRAS, GEORGE S.

Journal:

International Journal of Electronics

Année:

1992

Langue:

english

Fichier:

PDF, 253 KB

english, 1992

[IEEE IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference - New Orleans, LA, USA (2008.11.30-2008.12.4)] IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference - Error Rate Performance of Multilevel Signals with Coherent Detection

Sagias, Nikos C., Mallik, Ranjan K., Tombras, George S.

Année:

2008

Langue:

english

Fichier:

PDF, 206 KB

english, 2008

[IEEE 2009 Computation World: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns (COMPUTATIONWORLD) - Athens, Greece (2009.11.15-2009.11.20)] 2009 Computation World: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns - A Framework for Dynamic Car and Taxi Pools with the Use of Positioning Systems

Lalos, Petros, Korres, Andreas, Datsikas, Christos K., Tombras, George S., Peppas, Kostas

Année:

2009

Langue:

english

Fichier:

PDF, 878 KB

english, 2009

Comparative performance study of one or multiple receivers schemes for FSO links over gamma–gamma turbulence channels

Stassinakis, Argyris N., Nistazakis, Hector E., Tombras, George S.

Journal:

Journal of Modern Optics

Année:

2012

Langue:

english

Fichier:

PDF, 390 KB

english, 2012

[AIP INTERNATIONAL ELECTRONIC CONFERENCE ON COMPUTER SCIENCE - (28 June–8 July 2007)] AIP Conference Proceedings - Bayesian and Frequentist Estimation of the Average Capacity of Log Normal Wireless Optical Channels

Katsis, A., Nistazakis, H. E., Tombras, G. S., Simos, Theodore E., Psihoyios, George

Année:

2008

Langue:

english

Fichier:

PDF, 378 KB

english, 2008

Average Capacity of Optical Wireless Communication Systems Over I-K Atmospheric Turbulence Channels

Peppas, Kostas P., Stassinakis, Argyris N., Topalis, George K., Nistazakis, Hector E., Tombras, George S.

Journal:

Journal of Optical Communications and Networking

Année:

2012

Langue:

english

Fichier:

PDF, 290 KB

english, 2012

Performance of quadrature amplitude modulation orthogonal frequency division multiplexing-based free space optical links with non-linear clipping effect over gamma–gamma modelled turbulence channels

Stassinakis, A.N., Tombras, George S., Sinanović, Sinan, Nistazakis, Hector E., Popoola, Wasiu O.

Journal:

IET Optoelectronics

Année:

2015

Langue:

english

Fichier:

PDF, 410 KB

english, 2015

Hyperchaotic Attractor in a Novel Hyperjerk System with Two Nonlinearities

Daltzis, Peter, Vaidyanathan, Sundarapandian, Pham, Viet–Thanh, Volos, Christos, Nistazakis, Ektoras, Tombras, George

Journal:

Circuits, Systems, and Signal Processing

Année:

2017

Langue:

english

Fichier:

PDF, 2.07 MB

english, 2017

Analysis, Synchronization and Circuit Design of a 4D Hyperchaotic Hyperjerk System

Daltzis, Petros, Volos, Christos, Nistazakis, Hector, Tsigopoulos, Andreas, Tombras, George

Journal:

Computation

Année:

2018

Langue:

english

Fichier:

PDF, 9.49 MB

english, 2018

An Accurate Computational Tool for Performance Estimation of FSO Communication Links over Weak to Strong Atmospheric Turbulent Channels

Katsilieris, Theodore D., Latsas, George P., Nistazakis, Hector E., Tombras, George S.

Journal:

Computation

Année:

2017

Langue:

english

Fichier:

PDF, 1.18 MB

english, 2017

CDMA RoFSO Links with Nonzero Boresight Pointing Errors over M Turbulence Channels

Ninos, Michalis P., Nistazakis, Hector E., Sandalidis, Harilaos, Tombras, George S.

Journal:

IEEE Photonics Journal

Année:

2018

Langue:

english

Fichier:

PDF, 581 KB

english, 2018

Elimination of Idle Tones by a 2-Bit Adaptive Sigma-Delta Modulation System

Prosalentis, Evangelos, Tombras, George S.

Journal:

ETRI Journal

Année:

2009

Langue:

english

Fichier:

PDF, 665 KB

english, 2009

An Inverse Pheromone Approach in a Chaotic Mobile Robot’s Path Planning Based on a Modified Logistic Map

Petavratzis, Eleftherios K., Volos, Christos K., Moysis, Lazaros, Stouboulos, Ioannis N., Nistazakis, Hector E., Tombras, George S., Valavanis, Kimon P.

Journal:

Technologies

Année:

2019

Fichier:

PDF, 6.20 MB

2019

Time Jitter, Turbulence and Chromatic Dispersion in Underwater Optical Wireless Links

Roumelas, George D., Nistazakis, Hector E., Stassinakis, Argyris N., Varotsos, George K., Tsigopoulos, Andreas D., Tombras, George S.

Journal:

Technologies

Année:

2019

Fichier:

PDF, 1.24 MB

2019

[IEEE 2020 9th International Conference on Modern Circuits and Systems Technologies (MOCAST) - Bremen, Germany (2020.9.7-2020.9.9)] 2020 9th International Conference on Modern Circuits and Systems Technologies (MOCAST) - A Chaotic Circuit with Bi-Color LED as a Nonlinear Element

Giakoumis, Aggelos, Androutsos, Nikolaos A., Volos, Christos K., Moysis, Lazaros, Nistazakis, Hector E., Tombras, George S.

Année:

2020

Fichier:

PDF, 671 KB

2020