DEVICE TO GENERATE CODE DICTIONARIES OF NON-LINEAR RECURRENT SEQUENCES

摘要

FIELD: information technologies.;SUBSTANCE: device comprises a unit of cyclic symbol sequence generation, a unit of optimal sequence generation and a control unit, the unit of cyclic symbol sequence generation comprises a unit of NLRS length decoding, including six AND elements, and also the first multiplexer is introduced, at the same time the functional circuit of the optimal sequence generation unit is minimised with account of recurrent and common for certain types of NLRS simplest elements of logical function (implicant), and this unit comprises the second multiplexer, and the control unit comprises the third register for storage of varied codes of NLRS lengths and the second counter. It will make it possible to generate NLRS of various durations by efficient replacement of an NLRS length code, which will ensure the possibility of use the device for program controlled generation of composite or derivative pseudorandom sequences from simple NLRS, which considerably exceed the simple NLRS by mimic resistance and arsenal of replaceable parameters.;EFFECT: expansion of functional capabilities and reduced hardware costs for building a device to generate multiple non-linear recurrent sequences of various lengths and code forms, due to integration of several generators in one device and provision of the possibility for program control of the process of lengths and code forms replacement.;7 dwg