CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

SYSTEM ANALYSIS OF METHODS OF SYNCHRONOUS PROCESSING OF INFORMATION IN MAC PROTOCOLS OF MULTIPLE ACCESS USING PSEUDORANDOM SEQUENCES

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Podoltsev Viktor V. SYSTEM ANALYSIS OF METHODS OF SYNCHRONOUS PROCESSING OF INFORMATION IN MAC PROTOCOLS OF MULTIPLE ACCESS USING PSEUDORANDOM SEQUENCES // Caspian journal : management and high technologies. — 2019. — №4. — pp. 24-34.

Podoltsev Viktor V. - post-graduate student, Astrakhan State Technical University, 16 Tatishchev St., Astrakhan, 414056, Russian Federation, pvv_001@mail.ru

The article considers the main areas of application of pseudorandom sequences (PSP), formulates the main criteria for evaluating methods of synchronous information processing in PSP-oriented MAC (media access control) multiple access protocols, and carries out a system analysis of known methods for synchronizing PSP. The aim of this work is to substantiate the need to improve the accuracy of processing synchronizing information in the PSP-oriented MAS protocols of control and information processing systems that use the PSP at the access level. It is shown that the considered methods are usually developed for implementation at the physical level and are actually complex or unrealizable at the sub-level of access to the MAC transmission medium, where the multiple access protocols operate with already received and decoded bit sequences. The synchronization of the PSP by the Ward method and its modifications, which can be implemented at the sub-level of access to the transmission medium of the MAC. When synchronizing memory bandwidth, a method for majority decoding of the m-sequence is proposed, the use of which increases the likelihood of synchronizing the memory bandwidth and requires less hardware. This method can be easily implemented in information processing systems with PSP-oriented multiple access protocols.

Key words: синфазная обработка информации, среднее время поиска, вероятность правильной синхронизации, вероятность ложной синхронизации, методы синхронизации ПСП, метод мажоритарной обработки информации, метод Уорда, common-mode information processing, average searc