Method of cyclic synchronization based on permutations

The method of cyclic synchronization of receiving and transmitting stations for telecommunication systems with inseparable factorial coding is developed and investigated. The method is aimed to work in conditions of strong interference in communication channel. The main idea for the proposed method of cyclic synchronization establishing is the following. A permutation is the synchrocombination. The synchrocombination construction is divided into a prefix part that defines the boundaries of synchrocombination symbols and a suffix part that defines the boundaries of the synchrocombinationpermutation. The increase in the reliability of synchrocombination transmission is provided by its multiple repeating and majority processing of the received fragments. Probabilistic indicators of the developed method – the probability of correct synchronism establishing and the probability of incorrect synchronism establishing are theoretically determined and investigated. The block diagram of the cyclic synchronizing device is developed. The software model of data transmission, which implements the developed algorithm for establishing cyclic synchronism, is built. The experimentally obtained probabilistic characteristics of the developed method are estimated. Their compliance with theoretical indicators has been confirmed. The technical result the proposed method is aimed at is to reduce the loss of communication session time to perform the function of establishing a connection and, therefore, to increase the session time for transmission of user data and, consequently, for increase of channel bandwidth communication. The developed method can be effective for implementing not only in systems with inseparable factorial coding but also in classical data transmission systems where a standard delimiter is used

factorial coding; synchrocombination; probability of synchronism establishing; accumulation coefficient; high intensity interference