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This final qualification paper examines the development of intercultural competence among international students using digital technologies. In the context of globalization and digitalization, digital technologies play an important role in the educational process, contributing to the improvement of intercultural interaction. The research includes theoretical analysis and experimental research work conducted with Chinese students studying Russian as a foreign language (RCT) at UrFU. The main focus is on the use of the interactive Padlet platform for the formation of intercultural competence. The work has developed an intercultural training program, which includes a set of exercises aimed at developing this competence. The results of the study show that the integration of digital technologies into the Russian as a Foreign Language learning process contributes to the effective development of intercultural competence, improves motivation and adaptation of students to a new cultural context. The purpose of the study is to determine and substantiate the effectiveness of using an online service for the development of intercultural competence among students in the process of teaching Russian as a foreign language. / В данной выпускной квалификационной работе исследуется развитие межкультурной компетенции у иностранных студентов с использованием цифровых технологий. В условиях глобализации и диджитализации, цифровые технологии играют важную роль в образовательном процессе, способствуя улучшению межкультурного взаимодействия. Исследование включает теоретический анализ и опытно-поисковую работу, проводимую с китайскими студентами, изучающими русский язык как иностранный (РКИ) в УрФУ. Основное внимание уделяется использованию интерактивной платформы Padlet для формирования межкультурной компетенции. В работе разработана программа межкультурного тренинга, включающая комплекс упражнений, направленных на развитие данной компетенции. Результаты исследования показывают, что интеграция цифровых технологий в процесс обучения русский язык как иностранный способствует эффективному развитию межкультурной компетенции, улучшает мотивацию и адаптацию студентов к новому культурному контексту. Актуальность темы исследования обусловлена практической потребностью в поиске новых методик и технологий преподавания иностранных языков для развития межкультурной компетенции у студентов в эпоху диджитализации образования. Цель исследования – определить и обосновать эффективность использования онлайн-сервиса для развития межкультурной компетенции у студентов в процессе обучения русскому языку как иностранному.

Multiple-Input Multiple-Output (MIMO) communication using multiple antennas has received significant attention in recent years, both in the academia and industry, as they offer additional spatial dimensions for high-rate and reliable communication, without expending valuable bandwidth. However, exploiting these promised benefits of MIMO systems critically depends on fast and accurate acquisition of Channel State Information (CSI) at the Receiver (CSIR) and the Transmitter (CSIT). In Time Division Duplex (TDD) MIMO systems, where the forward channel and the reverse channel are the same, it is possible to exploit this reciprocity to reduce the overhead involved in acquiring CSI, both in terms of training duration and power. Further, many popular and efficient transmission schemes such as beam forming, spatial multiplexing over dominant channel modes, etc. do not require full CSI at the transmitter. In such cases, it is possible to reduce the Reverse Channel Training (RCT) overhead by only learning the part of the channel that is required for data transmission at the transmitter. In this thesis, we propose and analyze several novel channel-dependent RCT schemes for MIMO systems and analyze their performance in terms of (a) the mean-square error in the channel estimate, (b) lower bounds on the capacity, and (c) the diversity-multiplexing gain tradeoff. We show that the proposed training schemes offer significant performance improvement relative to conventional channel-agnostic RCT schemes. The main take-home messages from this thesis are as follows: • Exploiting CSI while designing the RCT sequence improves the performance. • The training sequence should be designed so as to convey only the part of the CSI required for data transmission by the transmitter. • Power-controlled RCT, when feasible, significantly outperforms fixed power RCT.