A.A. Gladkikh – Dr.Sc.(Eng.), Professor, Department «Telecommunications», Ulyanovsk State Technical University E-mail: a_gladkih@mail.ru, a.gladkih@ulstu.ru

N.A. Pchelin – Post-graduate Student, Department «Telecommunications», Ulyanovsk State Technical University E-mail: pna3@yandex.ru

S.V. Shakhtanov – Post-graduate Student, Department «Electronics and computer networks», 

Nizhny Novgorod State Technical University n.a. R.E. Alekseev; 

Senior Lecturer, Nizhny Novgorod state University of engineering and Economics E-mail: r155p@bk.ru