Mohammad S. Obaidat

SCS Distinguished Lecturer

Mohammad S. Obaidat
Professor of Computer Science
Monmouth University,
W. Long Branch, NJ 07664, USA

IEEE Fellow and SCS Fellow
Chief Editor, International Journal of Communication Systems, Wiley



Professor Mohammad S. Obaidat is an internationally well-known academic, researcher, and scientist. He received his Ph.D. and M. S. degrees in Computer Engineering with a minor in Computer Science from The Ohio State University, Columbus, Ohio, USA. Dr. Obaidat is currently a full Professor of Computer Science at Monmouth University, NJ, USA. Among his previous positions are Chair of the Department of Computer Science and Director of the Graduate Program at Monmouth University and a faculty member at the City University of New York. He has received extensive research funding. He has authored or co-authored five books and over three hundred (300) refereed scholarly journal and conference articles. Dr. Obaidat has served as a consultant for several corporations and organizations worldwide and is editor of many scholarly journals, including being the Chief Editor of the International Journal of Communication Systems published by John Wiley. In 2002, he was the scientific advisor for the World Bank/UN Workshop on Fostering Digital Inclusion. He was an IEEE (Institute of Electrical and Electronics Engineers) Distinguished Visitor/Speaker and has been serving as a National ACM (Association for Computing Machinery) distinguished Lecturer since 1995. Recently, Dr. Obaidat was awarded the distinguished Nokia Research Fellowship and the Distinguished Fulbright Scholarship.

Dr. Obaidat has made pioneering and lasting contributions to the multi-facet fields of computer science and engineering. He has guest edited numerous special issues of scholarly journals such as IEEE Transactions on Systems, Man and Cybernetics, Elsevier Performance Evaluation, Simulation: Transactions of the Society for Modeling and Computer Simulation International, Elsevier Computer Communications Journal, Journal of C & EE, and the International Journal of Communication Systems. Obaidat has served as the steering committee chair, advisory Committee Chair and program chair of many international conferences. He is the founder of the International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS and has served as the General Chair of SPECTS since its inception. Obaidat has received a recognition certificate from IEEE. Between 1994-1997, Obaidat has served as distinguished speaker/visitor of IEEE Computer Society. Since 1995 he has been serving as an ACM Distinguished Lecturer. Between 1996 and 1999, Dr. Obaidat served as an IEEE/ACM program evaluator of the Computing Sciences Accreditation Board/Commission, CSAB/CSAC. Between 1995 and 2002, he has served as a member of the board of directors of the Society for Computer Simulation International. Between 2002 and 2004, He has served as Vice President of Conferences of the Society for Modeling and Simulation International SCS. Prof. Obaidat is currently the Vice President of Membership of the Society for Modeling and Simulation International SCS. He has been invited to lecture and give keynote speeches worldwide. His research interests are: wireless communications and networks, modeling and simulation, performance evaluation of computer systems, algorithms and networks, information and computer security, telecommunications and Networking systems, high performance and parallel computing/computers, applied neural networks and pattern recognition, security of e-based systems, and speech processing. During the 2004/2005 academic year, he was on sabbatical leave as Fulbright distinguished Professor and Advisor to the President of Philadelphia University, Dr. Adnan Badran. The latter (Dr. Badran) became in April 2005 the Prime Minster of Jordan. Prof. Obaidat is a Fellow of the Society for Modeling and Simulation International SCS, and a Fellow of the Institute of Electrical and Electronics Engineers (IEEE).

Lecture Topics

Principles of Performance Evaluation of Computer & Telecommunication Systems

Performance evaluation of computer and telecommunication systems has become an increasingly important issue given their general pervasiveness. Evaluating of these systems is needed at every stage in their life. There is no point in designing and implementing a new system that does not have competitive performance. Performance evaluation of an existing system is also important since it helps to determine how well it is performing and whether any improvements are needed in order to enhance the performance. Computer and telecommunications systems performance can be evaluated using measurement, analytic modeling and simulation. Once a system has been built and is running, its performance can be evaluated using measurement techniques. In order to evaluate the performance of a component, or subsystem that cannot be measured, for example, during the design and development phases, it is necessary to use analytic or simulation modeling so as to predict the performance.

The objective of this talk is to provide an up-to-date treatment of the fundamental techniques and algorithms of computers, networks, and telecommunications systems performance modeling, simulation and measurement. Special emphasis will be given to discrete event simulation. The application of these techniques will be demonstrated by case studies and examples.


Fundamentals of Wireless Networks Systems

The field of wireless networks systems has witnessed tremendous growth in recent years causing it to become one of the fastest growing segments of the telecommunications technology. As wireless networks evolve with increasing size and profitability, they will be able to integrate with other wireless technologies enabling them to support mobile computing applications and perform as efficiently as wired networks. Due to the difficulties posed by the wireless transmission medium and the increasing demand for better and cheaper services, the area of wireless networks is also an extremely rich field for research and development.

This talk provides an in-depth coverage of the wide range of wireless technological alternatives offered today. It covers the fundamental techniques in the design, operation, and evaluation of wireless networks. It introduces the basic topics involved with wireless systems such as the electromagnetic spectrum physics of propagation, modulation multiple access and performance enhancement techniques, and cellular and ad-hoc concepts. It also presents the First Generation (1G) cellular systems, current Second Generation (2G) systems architectures supporting voice and data transfer and discusses the fast evolving world of Third Generation (3G) mobile networks systems. We will also, provide a vision of 4G and beyond mobile and wireless systems and describe satellite-based systems, fixed wireless systems, wireless LANs, wireless ATM and ad-hoc systems, Personal Area Networks (PANs) and security issues in wireless networks. Techniques for modeling simulation of wireless networks along with case studies will be covered as well.


Simulation of Wireless Networks Systems

This talk will deal with the essentials of wireless networks simulation. We will introduce the basics of discrete-event simulation, as it is the simulation technique used for simulating wireless networks. We will then review the main characteristics of the commonly–used stochastic distributions used for the simulation of wireless networks. The techniques used to generate and test random number sequences will be investigated next. Then, we will introduce the techniques used to generate random-variants followed by performance metrics consideration. This presentation will provide cases studies on the simulation of wireless network systems including wireless LANs, Mobile Ad hoc Wireless Networks (MANETs), TRAP and RAP wireless LANs protocols, and QoS in IEEE 802.11 WLAN Systems.