The thesis is devoted to the development of the methodology of digital signal processing for the creation of promising software-configurable telecommunication systems (SCTCS), which is an actual and economically grounded trend in the development of science and technology at the present stage.
For the first time, a method has been developed to reduce the number of digital signal processing operations in terms of increasing the efficiency and reliability of the transmission of information, the distinguishing feature of which is the use of the proposed orthonormal sparse transformation, which effectively reduces the number of digital signal processing operations depending on the size of the OFDM frame when performing iterations in the SCTCS.
The model of optimal block selection for reducing the peak factor of the power amplifier of the transmission part of the OFDM system, which proposes the use of orthonormal sparse transformation with breakdown into the blocks of input modified sequence, which, unlike the existing, does not increase the requirements of the hardware and software complexity of the SCTCS.
The further development of the model of the optimal choice of phase coefficient for reducing the peak factor of the power amplifier, which uses orthonormal sparse transformations with the definition of sets of phase sequences, which, unlike the existing ones, does not lead to an increase in the complexity of the OFDM-algorithms.
For the first time, a model of optimal phase-shift factor selection without re-sampling was developed, the distinctive feature of which is the use of only one graph of orthonormal sparse transformation, which allows to achieve a two-fold reduction of the transmission of excessive bits of information in their digital processing in real time without the use of re-sampling.
An improved model of matrix interleaving, in part to reduce pulsed industrial disturbances, proposes orthonormal, rarely transformed with bit-reversible interleaving of the digital sequence, which, unlike the existing ones, reduces the number of digital processing operations of SCTCS signals and works efficiently in weak and medium categories of industrial interference.
The further development of the nonlinearity suppression model is developed to reduce impulse-induced industrial disturbances, which uses orthonormal sparse transformation with the definition of the optimal quenching threshold, which, unlike existing ones, does not increase the complexity of the OFDM-system execution algorithms and works efficiently with powerful categories of industrial disturbances.
The method of estimation of the efficiency of functioning of telecommunication systems in conditions of interference, which, in contrast to the known ones, takes into account the computational complexity of digital signal processing operations, has been further developed. This enables the design of telecommunication equipment with the improvement of its functioning.
For the first time, the method of sharing Long Term Evolution and PowerLine Communications telecommunication infrastructure with scientific novelty is the application of a single digital signal processing module in the base pool, which complies with computing conditions, which provides reduction in the ICT infrastructure and operating costs of telecommunication operators.
Improved methods for assessing the stability of telecommunication systems to overload, which, unlike the known ones, takes into account the loading of computing resources, and the average waiting time is required for performing digital signal processing operations, which has allowed to improve the efficiency of the process of providing quality of service in the networks of the fourth and fifth generations.
