The article is devoted to increasing the efficiency of wireless information transmission systems with adaptation due to the preparation of initial polynomials of recursive systematic convolutional codes of turbo codes using a genetic algorithm. As an objective function, an indicative number of sign changes of the a priori-posterior information of the turbo code decoder for a certain sample of data bits is proposed. As prior information, the value of channel symbols is used, taking into account the channel “reliability” function, which indicates the level of dispersion of additive white gaussian noise. The logarithm of the ratio of the likelihood functions about the transmitted bit of data is used as posterior information. The analysis of known works shows that when using adaptive systems with coding as an adaptable parameter, the coding speed is used, which is regulated by the number of check symbols from the output of the turbo code encoder, while there are no developments on the adaptation of turbo code polynomials, as well as on the rapid formation of initial polynomials recursive systematic convolutional codes turbo codes. The use of rational polynomials as initial ones during
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