A.N. Zikiy1, A.S. Kochubey2, M.S. Litvinov3, A.N. Shurkhovetsky4

1−4 SC «Taganrog Research Institute of Communications» (Taganrog, Russia)

1 zikiy50@mail.ru, 2 l.co4ubey@ya.ru, 3 litvinovm@inbox.ru