Plenary Lecture 1
Assessment of Macro-diversity Systems Performance under the Influence of Specific Shadowing, Fading and Co-channel Interference
Professor S. Krstic Dragana
Faculty of Electronic Engineering
University of Nis
Nis, SERBIA
E-mail: dragana.krstic@elfak.ni.ac.rs
Abstract: The wireless signals spread in environments containing large and small obstacles that affect the quality of propagation. The obstacles cause a non-negligible loss of the propagated power. The degradation of the signal quality was described by introducing fading and shadowing effects with different distributions. A cases of a wireless communication system that consists of a macro level component, the most often represented by the selection combiner (SC) with two or three micro level components consisting of the maximal ratio combiners (MRC), or equal gain combiners (EGC) or SC combiners, with L branches, were studied in this lecture. The micro level component assumes the presence of a single base station. The received signal was disturbed by simultaneous impact of multipath fading and gamma shadowing, as well as co-channel interference. On the other side, SC component assumes the presence of two or three base stations, where the average power of the received signal was described using gamma distribution. The exact closedâform expressions were obtained for probability density function of the signal at the output of such systems, followed by the analysis of corresponding system performance. Always, the calculations were depicted graphically expressing influences of different fading values as well as the signal parameters.
Brief Biography of the Speaker: Dragana S. Krstic was born in Pirot, Serbia. She received the BSc, MSc and PhD degrees in electrical engineering from Department of Telecommunications, Faculty of Electronic Engineering, University of Nis, Serbia, in 1990, 1998 and 2006, respectively. Her field of interest includes Telecommunications Theory, Optical, Wireless, Mobile and Satellite Telecommunication Systems. She works at the Faculty of Electronic Engineering, University of Nis since 1990. During this period she was engaged in teaching of several courses: Telecommunications Networks, Basics of Telecommunications, Fundamentals of Electrical Engineering, Physics, Electronics, Digital Electronics, Telecommunications, Digital Telecommunications, Data Transfer, Digital Circuits, Optics, Telecommunications Theory, Internet over WDM Networks, Noises and Interferences, Performances of Optical Receivers, Integrated Optics, Detection of Signals from Noise. She participated in more projects which are supported by Serbian Ministry of Science and some international projects. Dr Dragana Krstic has written or co-authored near 280 published scientific papers: more than 60 are published in journals, near 150 at the international symposia and conferences, around 35 at national conferences. Several papers, presented at international symposia and conferences, was named as the best and proposed for printing in appropriate journals. She had 30 Plenary and Keynote lectures, Panels and Tutorials by invitation at international conferences and some faculties. She has reviewed many articles in prominent journals such as: IEEE Transactions on Communications; IEEE Communications Letters; ETRI journal; Computers and Electrical Engineering (C&EE Journal); Elektronika ir Elektrotechnika, Radioengineering, IEEE Access, Ad Hoc Networks, International Journal of Electronics, Mathematical Problems in Engineering, and other well known journals. She is/ was reviewer of the papers for hundreds conferences and the member of technical program committees and international scientific committees of more than 100 scientific conferences. Also, she is Associate Editor or member of Editorial Advisory Board/ Editorial Board of several journals: International WSEAS Transactions on Communications, International Journal of Communications, Journal on Advances in Telecommunications, International Journal of Communications (IARAS). She is IARIA Fellow.