FIELD: iterative decoders and methods for normalizing parameters stored in component decoder. SUBSTANCE: method for normalizing parameters in decoder that uses plurality of parameters of following condition, each mentioned parameter incorporating at least serviceability maintenance route parameter and competitive route parameter, includes detection of serviceability maintenance route (competitive route) parameters, detection of minimal parameter of serviceability maintenance route (competitive route) from detected parameters of serviceability maintenance route, check-up of detected minimal parameters of serviceability maintenance route (competitive route) for normal threshold value, and if serviceability maintenance route parameter (competitive route parameter) exceeds threshold value, minimal parameter of serviceability maintenance route is subtracted from parameters, and for competitive route desired normalization value is subtracted from parameters so as to enter normalized parameters. EFFECT: facilitated normalization of decoder parameters. 5 cl, 10 dwg
