Plenary Lecture
Performance Analysis of Complex SSC/MRC Combiner in Fading Channels with Different Distributions
Dr. Dragana Krstic
Department of Telecommunications
Faculty of Electronic Engineering
University of Nis
SERBIA
E-mail: dragana.krstic@elfak.ni.ac.rs
Abstract: The SSC and MRC are simple and frequently used techniques for signal combining in diversity systems. The expressions for probability density function (PDF) of the Switch and Stay Combiner (SSC) output signal to noise ratio (SNR) at one time instant and the joint probability density function of the SSC combiner output signal to noise ratio at two time instants in the presence of different kind of fading are determined. Then, these expressions are used for calculation of the bit error rate (BER), the outage probability (OP), and the amount of fading (AF) for complex Switch and Stay Combining/Maximal Ratio Combining (SSC/MRC) combiner. Both of combiners, SSC and MRC, are with two branches. The system performances deciding by two samples can be determine by the joint probability density function of the SSC combiner output signal at two time instants and putting them as inputs of MRC combiner.
The obtained results are presented graphically and the analysis of the parameters influence and different types of combiners is given. The improvement of using the complex SSC/MRC combiner relative to classical MRC and SSC combiners at one time instant, it was pointed out. Also, it is shown that using of this complex SSC/MRC combiner is not economical in the case of strongly correlated signals because it does not give better BER and AF than MRC combiner.
Brief Biography of the Speaker: Dr 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 communication systems, wireless communication systems, satellite communication systems etc. She works at the Faculty of Electronic Engineering in Nis since 1990. She participated in more Projects which are supported by Serbian Ministry of Science. She has written or co-authored more than 150 papers, published in Journals and at the International/National Conferences. She has also reviewed more articles in IEEE Transactions on Communications; IEEE Communications Letters; ETRI journal; C&EE Journal; Electronics and Electrical Engineering (Elektronika ir Elektrotechnika) and other journals. She is the reviewer of the papers for many conferences and the member of technical program committees and international scientific committees of several scientific conferences. As a member of some journal editorial boards Dr Krstic serves as a reviewer for a number of papers. She was awarded the title IARIA fellow.