Nezgazynska N. Recursive convolution codes for the increasing of a noise immunity of telecommunication systems

The object – of increase of a noise immunity of telecommunications systems by the error-control coding with using of a perspective class of error-control codes of "recursive convolution codes» (RCC). The subject – descriptions of the of telecommunications systems by the error-control coding with using of a perspective class of error-control codes of "recursive convolution codes» (RCC), generator polynomials and structure and distance properties. Research methods: theoretical and methodological basis of work are mathematical methods of the applied theory of code, methods of probability, theory of the error-control, mathematical statistics theory. Theoretical and practical results: got theoretical researches of overhead distance of minimum distance of binary sectional codes got subsequent development; method of forming of convolution codes with arbitrary speed of codes from the sequences «base» RCC with rate R=1/2 is developed. The technique is based on application of procedure of "punсturing" («deleting» numerals of a base code with rate R=1/2).. The theory of recursive convolution codes is extended. Influence of feed-back is first set in the structure of "recursive convolution codeк on the controlled from distance properties of generator polynomials. The tables of optimum of convolution codes are made for the binary ductings, for alarm-code constructions with unbinary FM by signals. The techniques and computer programs for reboric search of convolution codes (NCC and RCC) by criterion of a maxima of free distance in the given metric are developed.. Got subsequent development method of forming of convolution codes with arbitrary speed of codes from the sequences «base» RCC with rate R=1/2 is developed. The technique is based on application of procedure of "punсturing" («deleting» numerals of a base code with rate R=1/2)..