Prof. George Tsoulos
Wireless and Mobile Communications Lab, Dept. of Informatics and Telecommunications, University of Peloponnese, Trípoli, Peloponnísos, Greece
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Academic Career Length
32Years (1995-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 April 1999 in Electronics & Communication Engineering Journal
Journal Article
George TsoulosSpatial filtering using adaptive or smart antennas has emerged as a promising technique to improve the performance of cellular mobile systems. This paper presents an overview of smart antennas in terms of key characteristics, options, challenges and benefits, in the context of current, but also with a view towards future, generation personal communication systems.
7 August 2002 in IEEE Communications Letters
Journal Article
SLS. Loyka
S. Loyka
George TsoulosThe channel capacity of a multiple-input-multiple-output (MIMO) communication system depends substantially on correlation between individual receive branches. We investigate the MIMO capacity using the correlation matrix approach and the Salz-Winters (1994) spatial correlation model. It is shown that for a linear array, correlation has no impact on the MIMO channel capacity provided that the two-element array beamwidth is smaller than the angle spread of the incoming signals. Simple but accurate approximations for the correlation coefficient and the corresponding channel capacity are derived for different angular spreads.
1 January 1997 in IEEE Communications Magazine
Journal Article
18 March 2019 in IEEE Transactions on Antennas and Propagation
Journal Article
Sotirios K. GoudosGeorge TsoulosGAGeorgia Athanasiadou
Georgia Athanasiadou
MBMichael C. Batistatos
Michael C. Batistatos
DZDimitra Zarbouti
Dimitra Zarbouti
Kostas PsannisChannel modelling of wireless communications from unmanned aerial vehicles (UAVs) is an emerging research challenge. In this paper, we propose a solution to this issue by applying a new framework for the prediction of received signal strength (RSS) in mobile communications based on Artificial Neural Networks (ANN). The experimental data measurements are taken with an UAV at different altitudes. We apply several evolutionary algorithms (EAs) in conjunction with the Levenberg-Marquardt (LM) back-propagation algorithm in order to train different ANNs and in particular the L-SHADE algorithm, which self-adapts control parameters and dynamically adjusts population size. Five new hybrid training methods are designed by combining LM with self-adaptive Differential Evolution (DE) strategies. These new training methods obtain better performance to ANN weight optimization than the original LM method. The received results are compared to the real values using representative ANN performance indices and exhibit satisfactory accuracy.
1 May 2012 in Journal of Network and Computer Applications
Journal Article
3 September 1998 in Electronics Letters
Journal Article
To enhance the flexibility of a geometrical single reflection statistical model to describe more accurately different large cell mobile communications operational scenarios, the general case of scatterers distributed within an ellipse is considered. Based on this model, a simple formula for the probability density function (PDF) of the angle of arrival is presented. The PDF for the case of scatterers distributed within a circle is also derived as a special case of the presented PDF.
About Me
George Tsoulos is full Professor at the Department of Informatics and Telecommunications, University of Peloponnese, Greece, Director of the Wireless and Mobile Communications Laboratory and Director of the MSc ‘Modern Wireless Communications’. He has been involved in pioneering European collaborative R&D projects on smart antennas and new wireless air interfaces in the 90’s (TSUNAMI), or more recently on the European 6G strategy (COREnect) and wireless sensor applications (Synergies). He has served as the R&D Vice Rector of the University of Peloponnese, has been recognized among the top 2% of scientists worldwide since 2019, has served as an external expert reviewer for HORIZON projects and proposals, was the overall winner of the Management Consultancies Association Award with PA Consulting Group, Cambridge, UK, in 2002, was a HEFCE Research Fellow at the University of Bristol, and received a 'Distinguished Scientist' award from the Hellenic MoD.
His current research interests include intelligent wireless networks that integrate sensors, communications, drones for various applications, including measurement systems.