UDC 621.391.17
1 Institute of Special Communication and Information Protection of National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute,” Kyiv, Ukraine
 stddssss@gmail.com
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2 Institute of Special Communication and Information Protection of National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute,” Kyiv, Ukraine
tzadikalex@gmail.com
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METHOD OF CHOOSING SYNCHRO PREAMBLE OF MUTUALLY
NON-ORTHOGONAL DIGITAL SIGNALS IN ELECTRONIC
COMMUNICATION SYSTEMS WITH RANDOM MULTIPLE ACCESS
Abstract. Using the theory of statistical decisions, an approach to the selection of synchro preambles for mutually non-orthogonal digital signals during packet transmission in telecommunication systems with random multiple access is proposed. It is proposed to use sets of quasi-orthogonal Gold, Kasami, Kamaletdinov sequences and their combinations to solve the state detection problem in a common channel resource. Factorization of the problems of state detection in the radio channel and separation-demodulation by the methods of the theory of multi-user detection allows avoiding the exponential growth in the complexity of algorithms for processing conflicting signals.
Keywords: mutually non-orthogonal digital signals, mutial correlation properties of signals, discrete information parameter, decision rule, synchro preamble, probabilities of correct and false packet detection.
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