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Journal Achievements of Modern Radioelectronics №11 for 2015 г.
Article in number:
Fast input methods of telecommunication system in the synchronism based on the M Sequence
Keywords:
telecommunication system
busy channels
synchronization systems
M - sequence correlation sequences
Authors:
V.M. Artyushenko - Dr. Sc. (Eng.), Professor, Head of Department of Information Technology and Management Systems, Technological University (Korolyov, Moscow region). E-mail: artuschenko@mail.ru
V.I. Volovach - Ph. D. (Eng.), Associate Professor, Head of Department of Information and Electronic Service, Volga Region State University of Service (Togliatti). E-mail: volovach.vi@mail.ru
K.V. Anfalov - Senior Lecturer, Department of Information and Electronic Service, Volga Region State University of Service (Togliatti). E-mail: anfalow_k@mail.ru
Abstract:
The article analyzes the methods of generating input sequences of sync. As part of this work the methods of formation of signals that provide accelerated input of the transmission of single messages in synchronism, and their properties. Analysis using the M sequence signal transmission timing has shown that even with a synchronization clock rate, the average time of input in synchronism with turn-correlation is 1000 times greater than the transmission time of one-to communication, which is unacceptable. To speed up the syn-chronization process considers different methods of formed-tion sequences. Also describes some of the methods for calculating them of correlations-relational features. From the analysis of the correlation properties of the combined sequences obtained conclusion that a sequence obtained on the basis of the principle of majority someone binning, allow a rapid entry into synchronism. It is provided by alternately achieve maximum cross-correlation of each component involved in the formation of the combined sequence to follow, in series. In conclusion, it is shown that the method of input sync based on a combination of sequences, provides a significant gain in time compared with the usual nym way with turn-based correlation for the same length of the transmitted sequence Flow rate. With proper choice of the number and lengths of the components used in a sequence-FAD value of this win is approaching its limits.
Pages: 92-98
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