A thesis for a Doctor's of Technical sciences degree at the specialty 05.12.13 - radioengineering devices and facilities of telecommunication. - State University of Telecommunications, Kyiv, 2015. The result of research conducted in the course of the thesis is to develop a set of scientifically grounded theoretical positions and practical recommendations and proposals for the development of mechanisms of formalization of description of method of increasing of noise immunity of satellite telecommunication systems transmitting information to the synthesis and improving receiver circuit manipulated signals on the theory and practice the use of signal-code constructions, devices interleaving, turbo-code, modified schemes sync block signal processing for interpolation circuits with oversampling, when deciding maximize system capacity information transmission in the presence of noise. The thesis solved a scientific problem of improving noise immunity of digital satellite telecommunication systems and application ensembles search multiposition signals with noise immunity encoding schemes for the development of modified block synchronization signals of recovery of uneven sampling. Solution of the problem received through formation of signal-code construction designs (CCD) which combined contradictory properties of "dense" multiposition signals (high frequency efficiency) and noise immunity codes (high energy efficiency) in a single design, which provided simultaneous increase in both frequency and energy efficiency the processing of signals in satellite telecommunications facilities. In addition, the building of the mathematical model was held by formalizing solution of equation of polyphasic and modified multiphase interpolation system synchronization, determined depending on value from the phase estimation errors and normalized temporal errors at different fractional interval and multiphase design matched filters in the bank in manipulated signal receivers of telecommunication data transmission systems. Innovative improvement of systems related with the optimization of the formation of connections between components of the optimal structure of the receiver and the use of the modified synchronization schemes based on polyphasic and multiphase designs with resampling proposed scheme of manipulated signals for processing solution for the issue of ambiguity phase during demodulation. To improve the efficiency of synchronization (increase the value of winning in assessing noise immunity and reduce errors by constellation diagram) the method of converting the sampling frequency using polyphasic filters and the use of such devices in the system of synchronization of telecommunications. Based on experimental studies determined that with increasing coding rate and code structure, energy coding gain decreases for the proposed configuration and the case of information transmission channel, energy gain coding (EGK) equal to 6.8 dB (BER = 10-4). Established that such EGK cannot be achieved by applying convolutional or block codes separately. A circuit method to eliminate the effect of saturation error probability with increasing size is proposed. Established that advantage of cascade coding compared to convolutional code shown at BER <10-3. Restructuring of code, coding rate in case of turbo code increases the EGK. At various speeds coding of cascading codes, interleaving depth I = 5 close approximation to ideal performance in AWGN channel. The combination of the results has created a scientific and practical basis of building a new class of systems of synchronization that do not contain circuits phase automatic adjustment (phase locked loop - PLL) and are formed on designs which are based on modified up polyphasic filters. The method of raising the limit immunity satellite telecommunication systems with efficient encoding are proposed, the mathematical and simulation models of transmission signals based on cascading and turbo code are developed. In this paper the investigation of immunity satellite telecommunication systems are shown and received the further development of the model of the digital satellite channel of connection with noise immunity encoding based on parameter optimization of satellite system as a whole and CCM use of cascaded encoding based on a single design combining convolutional code and Reed-Solomon codes with quadrature phase shift keying and cascading turbo-code. The improved receiver circuit signals manipulated by using circuit solutions to eliminate the effect of the return of relative decoding, improving conditions for synchronization by using direct digital synthesizers synthesis are proposed. Determined that the modified scheme and multiphase interpolation filter circuit concerted allow you to gain at 3 dB for BER = 10-4 for modified interpolation device at 3.4 dB. Productivity of interpolation devices is primarily for high values . It is gained the further development of structure and laboratory layout of signal receiver satellite information by using the concept of Software-defined Radio (SDR) (chips R820T and RTL2832U) based on software processing. A prototype quadrafilar antenna for receiving information from the spacecraft remote sensing is developed. Keywords: synchronization, polyphase filter, noise immunity, interpolation, decimation, refraction, hydrometeors, orbit, noiseless coding, concatenated coding, signal-code construction, the turbo-code.
