Batrak Y. Method of increasing the efficiency of narrow-line information transmission in mobile radio systems

In the thesis the analysis of the automatic control system of the directional pattern of a mobile of active phased array antenna (APAA) with a limited number of transceiver modules is carried out, with their use in the mobile complex hardware communications. The analysis showed a number of shortcomings that lead to a significant increase in standard deviations, quadratic integral estimates; increasing the time of transient processes, which leads to a decrease in the efficiency of the antenna system; an increase in the error rate at reception; the lack of the ability of the system to respond to excitatory actions applied to any point of the system in the event of a mismatch with the specified level of signal / noise. In order to eliminate the identified shortcomings and reduce the errors in determining the direction - the hardware-transponder in mobile communication systems by using highly directional active phased antenna arrays due to the automatic control of the parameters of the APAA radiation pattern, the following scientific results were obtained. For the first time, a technique for estimating the quality indicators of the directivity control system of the active phased array antenna by random excitation effects has been developed, and it is possible to determine the moment of connection in the dynamics of motion between the hardware communication system and the repeater. An improved technique for increasing the speed and dynamic accuracy of automatic beamforming systems for active phased array antennas, which can be used to design APAA automatic guidance systems on mobile communication stations (complex hardware communications). The proposed methodology significantly reduces the response of the control system based on the obtained gain factors of the control system. An advanced technique for adaptive control of an active phased array antenna under conditions of information uncertainty, which differs from existing ones in the possibility of maximizing the probability of tuning to a repeater in the short-term absence of information on the spatial position of the repeater.