George S. Tombras

发表

Channel capacity and second-order statistics in Weibull fading

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2004, IEEE Communications Letters.

Average error performance in Subcarrier PSK FSO links over weak turbulence channels with spatial jitter and phase noise

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2017, 2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST).

Performance analysis of dual selection diversity in correlated Weibull fading channels

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2004, IEEE Transactions on Communications.

Average channel capacity for generalized-selection combining RAKE receivers

George K. Karagiannidis, Nikos C. Sagias, George S. Tombras, 2004, Eur. Trans. Telecommun..

Implementing a zoomable Web browser with annotation features for managing libraries of high quality images

Dimitris Kanellopoulos, George S. Tombras, Δημήτριος Κανελλόπουλος, 2012 .

On the use of Diversity in Transdermal Optical Wireless Links with Nonzero Boresight Pointing Errors for Outage Performance Estimation

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2019, 2019 8th International Conference on Modern Circuits and Systems Technologies (MOCAST).

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

George S. Tombras, Hector E. Nistazakis, Christos K. Volos, 2018, Comput..

Memory effects in EM emission during uniaxial deformation of dielectric Crystalline materials

George S. Tombras, Vassilios Hadjicontis, Dimitrios Ninos, 2005, IEEE Geoscience and Remote Sensing Letters.

Synchronization Phenomena in Coupled Non - identical Chaotic Circuits

George S. Tombras, Ioannis M. Kyprianidis, Ioannis N. Stouboulos, 2016 .

Adaptive Control and Synchronization of a Memristor-Based Shinriki’s System

Sundarapandian Vaidyanathan, George S. Tombras, Christos Volos, 2017 .

Spectral efficiency of a single-cell multi-carrier DS-CDMA system in Rayleigh fading

George S. Tombras, Panagiotis Varzakas, 2006, J. Frankl. Inst..

Spectral efficiency of direct‐sequence code‐division multiple‐access in cellular mobile radio

George S. Tombras, Panagiotis Varzakas, 1997 .

CDMA RoFSO Links With Nonzero Boresight Pointing Errors Over M Turbulence Channels

George S. Tombras, Hector E. Nistazakis, Harilaos G. Sandalidis, 2018, IEEE Photonics Journal.

Implementation of a Laboratory-Based Educational Tool for Teaching Nonlinear Circuits and Chaos

George S. Tombras, Ioannis M. Kyprianidis, Ioannis N. Stouboulos, 2016, Advances and Applications in Chaotic Systems.

Outage performance of mixed, parallel and serial DF relayed FSO links over weak turbulence channels with nonzero boresight pointing errors

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2018, 2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST).

Spectral efficiency of a cellular MC/DS‐CDMA system in Rayleigh fading

George S. Tombras, Panagiotis Varzakas, G. Tombras, 2005, Int. J. Commun. Syst..

Dual selection diversity over correlated Weibull fading channels

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

DF relayed FSO communication systems with time dispersion over Gamma Gamma turbulence and misalignment

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2017, 2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST).

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

George K. Karagiannidis, George S. Tombras, Diomidis S. Michalopoulos, 2008, J. Frankl. Inst..

PSK OFDM optical wireless communication systems with receiver's diversity over gamma-gamma turbulence channels and spatial jitter

George S. Tombras, Nikos Konofaos, Hector E. Nistazakis, 2017, 2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST).

OFDM RoFSO Links with Relays Over Turbulence Channels and Nonzero Boresight Pointing Errors

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2017, J. Commun..

SIMO subcarrier PSK FSO links with phase noise and non-zero boresight pointing errors over turbulence channels

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2019, IET Commun..

Equal-gain and maximal-ratio combining over nonidentical Weibull fading channels

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2005, IEEE Transactions on Wireless Communications.

On the performance of optical wireless communication links impaired by time jitter, M-turbulence and pointing errors

George S. Tombras, Erich Leitgeb, A. N. Stassinakis, 2020 .

On the detection of acoustic and electromagnetic signals before fracture of dielectric crystalline materials

George S. Tombras, Vassilios Hadjicontis, Dimitrios Ninos, 2004, IEEE Geoscience and Remote Sensing Letters.

Spectral efficiency for selection combining RAKE receivers over Weibull fading channels

George K. Karagiannidis, Nikos C. Sagias, George S. Tombras, 2005, J. Frankl. Inst..

Robot's path planning based on emulated finite resistive grids

George S. Tombras, Ioannis M. Kyprianidis, Ioannis N. Stouboulos, 2018, 2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST).

Estimation of spectral efficiency for MC/DS-CDMA in cellular systems

George S. Tombras, P. Varzakas, G. Tombras, 2000, IEEE Benelux Chapter on Vehicular Technology and Communications. Symposium on Communications and Vehicular Technology. SCVT-2000. Proceedings (Cat. No.00EX465).

On the BER performance of FSO links with multiple receivers and spatial jitter over gamma-gamma or exponential turbulence channels

George S. Tombras, Hector E. Nistazakis, Michalis P. Ninos, 2017 .

Block error rate estimation for wireless optical communication links over strong turbulence channels with pointing errors

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2017, 2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST).

Discovering DIMDIM: A heuristic evaluation of MOODLE's synchronous open source perspective

George S. Tombras, Petros Lalos, Nikos Dimakopoulos, 2009 .

Elimination of idle tones by a second order 2-bit adaptive sigma delta modulation system

George S. Tombras, E. A. Prosalentis, 2010 .

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

George S. Tombras, Kostas P. Peppas, Fotis Lazarakis, 2010 .

Spectral efficiency for FDMA and DS-CDMA in cellular systems

George S. Tombras, P. Varzakas, G. Tombras, 1998, Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (Cat. No.98TH8361).

Spectral efficiency of direct-sequence code-division multiple-access in cellular mobile radio

George S. Tombras, Panagiotis Varzakas, 1997, Int. J. Commun. Syst..

Dual-hop transmissions with fixed-gain relays over Generalized-Gamma fading channels pdf

George S. Tombras, A. Mansour, Kostas Peppas, 2010, ArXiv.

Performance Analysis of Hard-Switching Based Hybrid FSO/RF System over Turbulence Channels

George S. Tombras, Hector E. Nistazakis, Sajid Sheikh Muhammad, 2019, Comput..

Serially DF relayed hybrid FSO/MMW links with Weibull fading, M-turbulence and pointing errors

George S. Tombras, Erich Leitgeb, Hector E. Nistazakis, 2020 .

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

George S. Tombras, Ahmad Taher Azar, Viet-Thanh Pham, 2017, Complex..

Pointing errors influence at the performance of a multi-hop terrestrial FSO link emulated by a dual-hop scheme

George S. Tombras, Wilfried Gappmair, Hector E. Nistazakis, 2020 .

Optimal hop number of adaptive hybrid DS/FFH CDMA in Rayleigh fading

George S. Tombras, P. Varzakas, 2003 .

Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones

George S. Tombras, Evangelos A. Prosalentis, 2008, EURASIP J. Adv. Signal Process..

Average Channel Capacity in a Mobile Radio Environment with Rician Statistics (Special Issue on Personal, Indoor and Mobile Radio Communications)

George S. Tombras, Kostas Dangakis, Fotis Lazarakis, 1994 .

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

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2005, Eur. Trans. Telecommun..

Serial relaying communications over generalized-gamma fading channels

Nikos C. Sagias, George S. Tombras, Kostas Peppas, 2012, Wirel. Commun. Mob. Comput..

SISO and MISO Architecture Investigation for Wireless Optical OFDM Transmission

George S. Tombras, Hector E. Nistazakis, Konstantinos Aidinis, 2012 .

Spatial diversity for QAM OFDM RoFSO links with nonzero boresight pointing errors over atmospheric turbulence channels

George S. Tombras, Erich Leitgeb, Hector E. Nistazakis, 2019 .

New results for the Shannon channel capacity in generalized fading channels

George K. Karagiannidis, Nikos C. Sagias, George S. Tombras, 2005, IEEE Communications Letters.

Hyperchaotic Attractor in a Novel Hyperjerk System with Two Nonlinearities

Sundarapandian Vaidyanathan, George S. Tombras, Viet-Thanh Pham, 2018, Circuits Syst. Signal Process..

Higher Order Capacity Statistics of Diversity Receivers

Nikos C. Sagias, George S. Tombras, Fotis I. Lazarakis, 2011, Wirel. Pers. Commun..

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

George S. Tombras, Ioannis N. Stouboulos, Kimon P. Valavanis, 2019, Technologies.

Performance analysis of free-space optical communication systems over atmospheric turbulence channels

George S. Tombras, Theodoros A. Tsiftsis, Hector E. Nistazakis, 2009, IET Commun..

A point-to-point mobile radio prediction model based on effective height estimation for the region of Athens

George S. Tombras, Kostas Dangakis, A. A. Alexandridis, 1994, 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future..

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

George S. Tombras, Hector E. Nistazakis, George P. Latsas, 2017, Comput..

Constructing Learning-by-Doing Pedagogical Model for Delivering 21st Century Engineering Education

George S. Tombras, Hector E. Nistazakis, Ghassan Frache, 2018 .

A Framework for Dynamic Car and Taxi Pools with the Use of Positioning Systems

George S. Tombras, Petros Lalos, Kostas Peppas, 2009, 2009 Computation World: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns.

Evaluation of a terrain-based point-to-point propagation model in the 900 MHz band

George S. Tombras, Panos Kostarakis, Kostas Dangakis, 1997, Int. J. Commun. Syst..

Bayesian and frequentist estimation of the performance of free space optical channels under weak turbulence conditions

George S. Tombras, Hector E. Nistazakis, Athanassios Katsis, 2009, J. Frankl. Inst..

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

George S. Tombras, Hector E. Nistazakis, Evangelia A. Karagianni, 2009, Journal of Communications and Networks.

Performance of Underwater Wireless Optical Link Under Weak Turbulence and Pointing Errors Using Heterodyne QAM Technique

George S. Tombras, George K. Varotsos, Hector E. Nistazakis, 2019, ONDM.

A 2-bit Adaptive Delta Modulation System with Improved Performance

George S. Tombras, Evangelos A. Prosalentis, 2007, EURASIP J. Adv. Signal Process..

Performance study of terrestrial multi-hop OFDM FSO communication systems with pointing errors over turbulence channels

George S. Tombras, Hector E. Nistazakis, Michalis P. Ninos, 2016 .

Dual-hop multi-input multi-output relay systems over spatially correlated Nakagami-m fading channels

Nikos C. Sagias, George S. Tombras, Kostas Peppas, 2011, IET Commun..

CDMA radio on FSO links over gamma turbulence channels with nonzero boresight pointing errors

George S. Tombras, Hector E. Nistazakis, Antreas D. Tsigopoulos, 2018, 2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST).

BER Estimation of Dual Hop QAM OFDM ROFSO over Exponentially Modeled Turbulence and Optical Fiber with Nonlinear Clipping

George S. Tombras, Hector E. Nistazakis, A. N. Stassinakis, 2014 .

Second order statistics and channel spectral efficiency for selection diversity receivers in Weibull fading

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2004, 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754).

Dual-Hop Relaying Networks over Nakagami-M Fading Channels

Nikos C. Sagias, George S. Tombras, Fotis I. Lazarakis, 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

Bit Error and Outage Probability of Serial Relaying Communication Systems

Nikos C. Sagias, George S. Tombras, Nikolaos D. Tselikas, 2010, 2010 14th Panhellenic Conference on Informatics.

Estimation of the influence of Vanadium dioxide optical filters at the performance of visible light communication systems

George S. Tombras, Hector E. Nistazakis, Christos K. Volos, 2018, 2018 7th International Conference on Modern Circuits and Systems Technologies (MOCAST).

Spectral efficiency of adaptive hybrid DS/FFH CDMA in Rayleigh fading

George S. Tombras, P. Varzakas, 2003 .

Field measurements and coverage prediction model evaluation based on a geographical information system

George S. Tombras, Kostas Dangakis, A. A. Alexandridis, 1994, 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future..

Spectral efficiency of a cellular MC/DS-CDMA system in Rayleigh fading: Research Articles

George S. Tombras, Panagiotis Varzakas, 2005 .

Error Rate Performance of Multilevel Signals with Coherent Detection

Ranjan K. Mallik, Nikos C. Sagias, George S. Tombras, 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

Outage Analysis of Decode-and-Forward Relaying Over Nakagami- $m$ Fading Channels

Nikos C. Sagias, George S. Tombras, Fotis I. Lazarakis, 2008, IEEE Signal Processing Letters.

Synchronization Phenomena in Coupled Birkhoff-Shaw Chaotic Systems Using Nonlinear Controllers

George S. Tombras, Christos Volos, Ioannis M. Kyprianidis, 2016 .

On the cascaded Weibull fading channel model

Nikos C. Sagias, George S. Tombras, 2007, J. Frankl. Inst..

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

George S. Tombras, Hector E. Nistazakis, Kostas Peppas, 2010, J. Frankl. Inst..

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

George S. Tombras, Evangelos Prosalentis, 2009 .

Average output SINR of equal-gain diversity in correlated Nakagami-m fading with cochannel interference

George K. Karagiannidis, Nikos C. Sagias, Dimitris A. Zogas, 2005, IEEE Transactions on Wireless Communications.

Introducing JOUNBO: A New Advanced Online Journal and Newspaper Browser

George S. Tombras, Petros Lalos, 2008, J. Multim..

An externally triggered CMOS triangle and/or ramp pulse generator

George S. Tombras, Stylianos Siskos, 1991, [1991 Proceedings] 6th Mediterranean Electrotechnical Conference.

Spectral efficiency for a hybrid DS/FH code-division multiple-access system in cellular mobile radio

George S. Tombras, Panagiotis Varzakas, G. Tombras, 2001, IEEE Trans. Veh. Technol..

BER estimation for multi-hop RoFSO QAM or PSK OFDM communication systems over gamma gamma or exponentially modeled turbulence channels

George S. Tombras, A. N. Stassinakis, Hector E. Nistazakis, 2014 .

Spatial Jitter Influence on the Average BLER Performance of SIMO FSO Links over Atmospheric Turbulence Channels

George S. Tombras, Hector E. Nistazakis, Nikolaos A. Androutsos, 2021, Electronics.

Greek MOOC of Experiments with Simple Materials for Students Generates Significant Findings for Teachers and Physics Education

George S. Tombras, T. P. Nantsou, E. C. Kapotis, 2021, 2021 IEEE Global Engineering Education Conference (EDUCON).

A Lab of Hands-on STEM Experiments for Primary Teachers at CERN

George S. Tombras, T. P. Nantsou, E. C. Kapotis, 2021, 2021 IEEE Global Engineering Education Conference (EDUCON).

Block Error Performance of PAM or PPM SIMO FSO Links over Strong Turbulence Channels

George S. Tombras, Hector E. Nistazakis, A. N. Stassinakis, 2021, 2021 10th International Conference on Modern Circuits and Systems Technologies (MOCAST).

A Physics and Engineering Lab for Primary Teachers at CERN

George S. Tombras, Tina P. Nantsou, Efstratios C. Kapotis, 2021, Int. J. Recent Contributions Eng. Sci. IT.

Performance Analysis of SISO and MIMO FSO Communication Systems Over Turbulent Channels

George S. Tombras, Hector E. Nistazakis, Kostas P. Peppas, 2012 .

Estimation of Outage Capacity for Free Space Optical Links over I-K and K Turbulent Channels

George S. Tombras, Hector E. Nistazakis, D. Marinos, 2011 .

Probability of fade estimation for FSO links with time dispersion and turbulence modeled with the gamma-gamma or the I-K distribution

George S. Tombras, Hector E. Nistazakis, A. N. Stassinakis, 2014 .

Period doubling, Feigenbaum constant and time series prediction in an experimental chaotic RLD circuit

George S. Tombras, M. P. Hanias, G. Tombras, 2009 .

FSO links with diversity pointing errors and temporal broadening of the pulses over weak to strong atmospheric turbulence channels

George S. Tombras, Hector E. Nistazakis, G. K. Varotsos, 2016 .