In the area of communications the RCL is active
in the topics of Modulation, Digital and Analog Systems and spread spectrum
techniques. A relevant project was carried out in the Design of a CDMA
receiver. Also much work is made on efficient modulation techniques in
cooperation with Democritus Univ. of Thrace (Prof. Chr. Koukourlis) and
Pegasus Labs in USA.
Some recent publications in this area are given
A chapter entitled "Wireless Communications Using
Spectrally Efficient VMSK/Z Modulation" by H. R. Walker, J. Pliatsikas,
Chr. Koukourlis and J. N. Sahalos is included in the book of Springer
(2001): Third Generation Mobile Telecommunication Systems.
Baltzis and J. N. Sahalos, A Novel RAKE Receiver Design for Wideband
Wireless Communications, Journal of Wireless Personal Communications,
accepted for publication.
Kaifas, J.N. Sahalos, A 4x4 Butler Matrix Optimized for UMTS
applications, Microwave and Optical Technology Letters,Vol. 49,
Issue 3, pp. 585-588, Mar 2007.
J.N.Sahalos, On the Design of a Single Layer Wideband Butler Matrix for
Switched-Beam UMTS System Applications, IEEE Antennas and Propagation
Magazine, vol. 48, no. 6, pp. 193-204, Dec 2006
Siachalou, T. Samaras, C. Koukourlis and S. Panas, On the beam tilting
and bit rate selection in mobile systems, Electrical Engineering,
vol. 89, no. 2, pp. 107-116, 2006.
Miaris, E. Siachalou, T. Samaras, S. K. Goudos, E. Vafiadis and S. Panas,
On the base stations antenna system design for mobile communications,
Electrical Engineering, vol. 88, no. 2, pp. 157-163, 2006.
Hilas, S.K. Goudos, J.N. Sahalos, Seasonal decomposition and forecasting
of telecommunication data: A comparative case study, Technological
Forecasting & Social Change, Elsevier, vol. 73, no. 5, pp. 495-509,
Hilas, J.N. Sahalos, Testing the Fraud Detection Ability of Different
User Profiles by Means of FF-NN Classifiers, ICANN 2006, Part II,
LNCS 4132, pp. 872-883, 2006.
Miaris, E. Siachalou, T. Samaras, S. Goudos, E. Vafiadis, S. Panas, On
mobile communications smart base-station system design, IEEE Antennas
and Propagation Magazine, vol. 47, no. 2, pp. 139-144, 2005
Gotsis, S.K. Goudos and J.N. Sahalos, A Test Lab for the Performance
Analysis of TCP over Ethernet LAN on Windows Operating System, IEEE
Trans. Education, vol. 48. No. 2, pp. 318-328, May 2005.
Pliatsikas, C. S. Koukourlis and J. N. Sahalos, On the Combining of the
Amplitude and Phase Modulation in the Same signal, IEEE Broadcasting,
vol. 51, no. 2, pp. 230-236, June 2005.
Plevridis, C. S. Koukourlis and J. N. Sahalos, A Digitally Propulsive
PLL for Timing Recovery Applications, JEEE, vol. 56, no. 7-8, pp.