Kravchenko V. The technique of optimal reception of multi-position signals of LTE technology based on high order modulation

The thesis is devoted to the development of methods for improving the quality of LTE communication systems. The temporary model for calculating the mobility of the LTE system is improved, which is based on fuzzy logic and formalizes the influence of destabilizing factors on its functioning. An algorithm has been developed to improve the reliability of mobile communication systems of the LTE standard, using a duplicated system. A technique for the optimal reception of multi-position signals of a hexagonal constellation by the criterion of an ideal observer on the basis of high-order modulation is developed, which has the highest noise immunity of signals with respect to two coordinates (x, y), close to the potential one. A technique for calculating the parameters of signals with increased noise immunity based on the algorithm for determining the optimum values of the OFDM signal is developed.