Olexandr V. Lemeshko received the Doctor's degree in telecommunication systems and networks from Kharkov National University of Radioelectronics, Ukraine, in 2005. From 2005 he is professor of department of Telecommunication Systems in Kharkov National University of Radioelectronics, and assistant editor of the journal “Problems of Telecommunications”. His research interest includes the optimization and quality of service in telecommunications. He is the coauthor of three books, author of more than 100 articles, and more than 10 inventions.