350 rub
Journal Radioengineering №6 for 2014 г.
Article in number:
Radiocommunication systems interference immunity increasing methods and combined usage of them in adaptive information exchange system
Keywords: interference immunity increase methods noise stability secrecy radio communication system multiparameter adaptation effectiveness factor
Authors:
Y.B. Nechaev - Dr. Sci. (Phys-math.), professor, department of computer science, chair of information systems, Voronezh State University. E-mail: nechaev_ub@mail.ru
N.N. Vinokurova - Ph. D. (Phys-math.), associate professor, department of computer science, chair of information systems, Voronezh State University. E-mail: vnn-61@ mail.ru
O.A. Plaksenko - Leading designer, JSC «Concern «Sozvezdie». E-mail: angorec@list.ru
S.J. Beleckaja - Dr. Sci. (Eng.), Professor, systems of the automated design and information systems, Voronezh State Technical University
Abstract:
The paper analyzes the ways to improve the interference immunity based on spectrum expanding by pseudo-random sequence carrier modulation method, the frequency-hopping method, hybrid method PR sequence - hopping, using error-correction coding and various kinds of modulation. Structure and functioning algorithm of developed information exchange system using multi-parameter adaptation, which realizes a combined application of analyzed improving interference immunity methods and adaptive adjustment of four parameters: the transmission symbol rate, error-correcting coding redundancy, modulation symbol capacity and the power of the emitted signal overviewed. To evaluate the effectiveness of the developed system its simulation model realized. Effectiveness criteria that are evaluated in the simulation are the average message delivery time and the probability of bit error at the reception. Comparative analysis of the adaptive information exchange system with several non-adaptive systems in the absence of jamming, and with its presents realized.
Pages: 47-52
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