Vovchenko O. Sinchronization methods and means of modems for computer systems with noise signals.

The object of study: the processes of transfer, synchronization and data processing in computer systems with noise signals. Objective: development of methods and tools of data synchronization in computer systems with noise signals in order to improve the quality of data transmission. Scientific novelty of the results: 1. an analytical dependence of the probability of error receiver modem system KCHMSHS upon the value of the resynchronization was detected, that helps to select the optimal threshold and clock interval T adjusted with transmission speed and noise immunity system. 2. For the first time, the method of maximizing a posteriori autocorrelation function of the signal for bit synchronization modem with KCHMSHS was suggested, that can improve accuracy of the synchronization. 3. Improved method of clock synchronization in multi-system data from KCHMSHS, thus enhancing immunity system data with noise signals. 4. Obtained further development of codes with self-synchronizing properties in UWB communication systems with KCHMSHS, which increases the efficiency of the system synchronization modem. The practical significance of the results lies in the development of structural schemes, algorithms for synchronization systems, that can improve the accuracy of synchronization. A series of studies of simulation precision, synchronization performance systems, and statistical analysis of the results, confirmed scientific statements, recommendations and conclusion of the thesis. The results obtained are suitable for engineering design of computer systems.