Gorbatyy I. Methods and facilities of signal forming and processing for efficiency increasing of the data transmission telecommunication systems and networks

A thesis was devoted to development of methods and facilities of signal forming and processing for technical efficiency increasing of the telecommunication systems and networks with limited bandwidth and signal power in case of data transmission in the conditions of noises. The new high efficient modulation group based on amplitude modulation of many components (АМMС), N-measured space of demodulation, functioning principles of facilities for realization of modulation and demodulation of АМMС-signals was offered, that allowed to increase the efficiency of the telecommunication systems and networks. The method of research and optimization of signal-code construction by the criterion of maximal informative efficiency of the data transmission telecommunication system or network was offered, that allows to find most effective among the known and new offer signal-code constructions. Theoretical bases for determination of technical efficiency of the telecommunication systems and networks, analytical correlations for determination of frequency and energy descriptions of modulating and modulated signals, mathematical model of the telecommunication access network based on symmetric and coaxial communication lines, mathematical model of the fiber optic telecommunication system and mathematical model of the telecommunication system based on radio line was modernized, that allowed to increase exactness of determination of the explore systems or networks efficiency. The modernized methods of adaptive data transmission in the telecommunication access networks based on symmetric and coaxial telecommunication lines, fiber optic telecommunication systems, systems of the remote sensing of Earth, satellite systems, radio relay transmission systems of direct visibility and others similar systems with the use of АМMС was offered, that allowed to maximize a speed of data transmission and increase the efficiency of the system or network.