Engineering Physics Annotation << Back About possibility of indemnification of the additional noise entered into the channel of transfer for protection of the information T.Yu.Morozova, A.P. Remontov, T.I. Skvortsova, M.A. Chistjakova This paper presents the indicator which serves for decision-making on possibility of indemnification of the additional noise in channel. The device of an optimum filtration for an estimation of the indicator is used. There are proved a lemma and theorems which establish behavior of an indicator for various cases. Keywords: Protective noise, indemnification, an optimum filtration, the relation a signal/noise, active protection frames. E-mail: tmorozova2006@rambler.ru