K. R. Rao holds a B.Sc from the College of Engineering, Guindy, Chennai, India and Ph.D from The University of New Mexico, Albuquerque, USA. Since 1966, he has been with the University of Texas at Arlington, USA, where he is currently a professor. He, along with two other researchers, introduced the Discrete Cosine Transform in 1975, which has since become popular in digital signal processing. An IEEE fellow, he has co/authored and co/edited numerous books, published extensively in refereed journals, presented at several international conferences, and served as a consultant to industry, research institutes, law firms, and academia. Zoran S. Bojkovic holds a B.Sc, M.Sc, and Ph.D from the University of Belgrade, Serbia, where he is currently a full professor. He is also a permanent visiting professor at the University of Texas at Arlington, USA. A member of the editorial board of six international journals, he has co/authored and co/edited numerous books, conference proceedings, and papers in peer-reviewed publications. A member of several academic and professional societies, he has conducted seminars and participated in over 70 scientific and industrial projects all over the world. He has also been a consultant to industry, research institutes, and academia. Bojan M. Bakmaz holds a B.Sc, M.Sc, and Ph.D from the University of Belgrade, Serbia, where he is currently an assistant professor. In his previous work, he participated in the realization of several scientific projects and studies. He is the author of a monograph, a textbook, and over 70 papers in international journals and conference proceedings. A member of IEEE, he is an active reviewer of numerous scientific publications. His research interests include multimedia wireless networks, QoS, teletraffic theory, and handover techniques.