Yu.G. Gamayunov - Dr. Sc. (Phys.-Math.), Professor, Saratov State University named after N.G. Chernyshevsky. E-mail: GamayunovYG@info.sgu.ru E.V. Patrusheva - Ph. D. (Phys.-Math.), Research Scientist, Saratov State University named after N.G. Chernyshevsky. E-mail: PatrushevaEV@info.sgu.ru Yu.A. Grigoriev - Dr. Sc. (Phys.-Math.), Professor, Leading Research Scientist, Saratov branch of Kotel\'nikov IRE of RAS. E-mail: grig@soire.renet.ru A.A. Burtsev - Ph. D. (Eng.), Head of Laboratory «», JSC «SPE «Almaz» (Saratov), Associate Professor, Yuri Gagarin State Technical University of Saratov. E-mail: antbourtsew@gmail.com

D.Yu. Tarabrin - Ph. D. (Eng.), Senior Research Scientist, Ryazan State Radio Engineering University. E-mail: tarabrin-dmitriy@mail.ru A.A. Trubitsyn - Dr. Sc. (Phys.-Math.), Professor, Ryazan State Radio Engineering University. E-mail: assur@bk.ru S.B. Bimurzaev - Dr. Sc. (Phys.-Math.), Professor, Almaty University of Power Engineering & Telecommunications. E-mail: bimurzaev@mail.ru