No abstract

The advantages of digital methods of processing, displaying, storing and transmitting information. Currently, various conversion methods and efficient coding methods are used to increase the speed of information transfer, maintain high accuracy and provide the required latent accuracy. In particular, timer (temporary) signal constructions, which, in comparison with other coding methods, for example, positional (bitwise) coding, can reduce costs by more than two times. In the work, the information parameters of the code ensembles synthesized at a constant duration "m" are evaluated. Determined the conditions for the formation of a code ensemble and calculate the number of code dictionary implementations on a segment of a nyquist elements.In order to use the communication channel efficiently, the proposed increase in the entropy of the transmitted ensemble is due to the use of code sets with different number of information segments and at a constant length of the code word. A significant increase in the weight of the synthesized ensemble ensured an increase in the value of the module А0 =19 integer times K є 8:18 .The maximum values of the module are calculated in which the greatest number of code words is synthesized: At: КА0 =13, Np=8; КА0 =14, Np=10 КА0 =15, Np=15; КА0 =17, Np=16 КА0 =18, Np=10; КА0 =19, Np=6 КА0 =20, Np=1 For these КА0 values, the entropy value is H=3.269, which is less than the entropy of the Russian text H=4.35. In accordance with code words that satisfy the conditions of the quality equation. The methods and algorithms of reliable reception of code words under the influence of interference in the channel used were analyzed.Studies and calculations have shown that the use of temporary signal structures synthesized on the basis of a onemodule can significantly reduce the value of entropy for the transmission of Russian text.

The clarification of the concept of information only slightly supplements the intuitive understanding of this term and does not provide anything for the construction of a quantitative theory of information that could be used in solving engineering problems. For such a theory, it is necessary to introduce an "operational" definition of this concept, which is based on an indication of the measurement method. To estimate the amount of information received, it is necessary to find a measure of the uncertainty of a particular situation. When transmitting information over a distance, at the output of the transmitting converter there is a finite system of signals that unambiguously correspond to the symbols and form the input alphabet of the communication channel. At the output of the receiving device, there is a finite system of signals that form the output alphabet of the communication channel. The process of transmitting information consists in selecting chips, sending them over the communication line and making a decision on the transmitted signal based on the received chip. It is obvious that the extraction of information about signals from signals is associated with the representation of the alphabets {X} and {Z} in the form of a combined set {XZ}. The transfer of information in communication systems is always associated with a change at the receiver of information about the actually transmitted signals. From the point of view of the receiver, the alphabet of the source has uncertainty, since he can only know a priori probabilities, but it is not known whether the signal was actually transmitted; this can be judged only by the magnitude of the posterior probabilities. From this point of view, setting some numerical characteristics of a random variable is not enough. This article analyzes the issues of reliability of events in the "ensemble" of received messages, depending on the a priori probabilities of events. The assessment of the amount of information in relation to the reliability of the received messages is made, the recommendations used in solving majority of the problems associated with the construction of information transmission and transformation systems are indicated.

An analysis of the means and principles of electronic intelligence, as well as technologies, that allow access to information, shows that in modern conditions, the need for increasing the effectiveness of countering them is growing. That is why the urgent task is the search or synthesis of signal structures that provide the necessary level of resistance of information messages to the possibility of unauthorized access. To this end, the article explores the principles of signal generation based on timer and position coding. These principles are very different. In positional coding, the length of individual signal segments in the code structure can be equal , and so on. Thus, the distance between the moments of modulation is a multiple of the length and the exact number of code words . When using timer signal constructions, the code word will consist of several information sections that must correspond to the condition , where are integers. Therefore, cannot be less , but contains information about the number. The article shows the number of implementations of timer signal structures and power of the position code, entropy calculated indicating the probability of errors in various parameters. Also considered is a modular time consolidation method and recommendations are given for its use to increase the secrecy of information by generating uncertainty during transmission during encryption. In addition, it is proved that the use of modules of the system of residual classes will increase the efficiency of secrecy of information transmitted by a signal constructed on the basis of timer signal structures.