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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">tuzsut</journal-id><journal-title-group><journal-title xml:lang="ru">Труды учебных заведений связи</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Telecommunication Universities</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-324X</issn><issn pub-type="epub">2712-8830</issn><publisher><publisher-name>СПбГУТ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31854/1813-324X-2022-8-1-41-47</article-id><article-id custom-type="elpub" pub-id-type="custom">tuzsut-309</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОНИКА, ФОТОНИКА, ПРИБОРОСТРОЕНИЕ И СВЯЗЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, PHOTONICS, INSTRUMENTATION AND COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Анализ характеристик алгоритмов прекодирования сигналов в MU-MIMO системе с использованием модели канала QuaDRiGa</article-title><trans-title-group xml:lang="en"><trans-title>Performance Evaluation of the MU-MIMO Precoding Using the QuaDRiGa Channel Model</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1235-6314</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калачиков</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalachikov</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калачиков Александр Александрович – кандидат технических наук, доцент кафедры радиотехнических систем </p><p>Новосибирск, 630102</p></bio><bio xml:lang="en"><p>Novosibirsk, 630102</p></bio><email xlink:type="simple">330rts@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2813-7370</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Безгодкин</surname><given-names>Р. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bezgodkin</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Безгодкин Роман Олегович – лаборант НИЛ-12 </p><p>Новосибирск, 630102</p></bio><bio xml:lang="en"><p>Novosibirsk, 630102</p></bio><email xlink:type="simple">bezgodkinroman@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3129-4721</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петров</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrov</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петров Иван Андреевич – лаборант НИЛ-12</p><p>Новосибирск, 630102</p></bio><bio xml:lang="en"><p>Novosibirsk, 630102</p></bio><email xlink:type="simple">levaplova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2359-0958</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Винников</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vinnikov</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Винников Андрей Анатольевич – лаборант НИЛ-12 </p><p>Новосибирск, 630102</p></bio><bio xml:lang="en"><p>Novosibirsk, 630102</p></bio><email xlink:type="simple">andrey.vinnikov@internet.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Сибирский государственный университет телекоммуникаций и информатики<country>Россия</country></aff><aff xml:lang="en">Siberian State University of Telecommunications and Information Science<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>01</day><month>04</month><year>2022</year></pub-date><volume>8</volume><issue>1</issue><fpage>41</fpage><lpage>47</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Калачиков А.А., Безгодкин Р.О., Петров И.А., Винников А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Калачиков А.А., Безгодкин Р.О., Петров И.А., Винников А.А.</copyright-holder><copyright-holder xml:lang="en">Kalachikov A., Bezgodkin R., Petrov I., Vinnikov A.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://tuzs.sut.ru/jour/article/view/309">https://tuzs.sut.ru/jour/article/view/309</self-uri><abstract><p>В статье представлен анализ характеристик алгоритмов прекодирования сигналов в многоантенной системе со многими пользователями (MU-MIMO). Рассматриваются алгоритм прекодирования ZF и алгоритм с использованием векторов прекодирования на основе дискретного преобразования Фурье (ДПФ) в практических условиях работы сети связи на основе модели канала QuaDRiGa, учитывающей реальные условия распространения сигналов. Полученные в модели реализации канала используются для вычисления величин отношения сигнал/шум и спектральной эффективности каждого пользователя с применением весовых векторов прекодирования, вычисленных по методу ZF и кодовых векторов ДПФ. Использование кодовых векторов ДПФ основано на квантовании измеренной импульсной характеристики канала и передаче информации о квантованном канале в виде нормы проекции вектора канала на выбранное кодовое слово и индекса этого слова по каналу обратной связи. Характеристики прекодирования в виде суммарной эргодической спектральной эффективности сравниваются на модели канала для двух способов прекодирования в каналах с пространственной корреляцией. Численное моделирование показывает, что более простая схема кодовых векторов ДПФ позволяет получить большую компенсацию интерференции в коррелированных каналах, чем схема ZF, и повысить спектральную эффективность.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the analysis of characteristics of algorithms of signal precoding in a multi-antenna system with many users (MU-MIMO). This paper presents the numerical evaluation of the multiuser MIMO beamforming algorithms ZF and DFT codebook based on a QUADRIGA channel model, taking into account the real conditions of signal propagation. The generated channels are used to calculate SINR and the spectral efficiency values of each user using the conventional ZF and DFT beamforming codebook. The eigenvalues of the MIMO channel are important in evaluating the MU-MIMO transmission performance characteristics, such as the spectral efficiency of a precoded system. The obtained performance of MU-MIMO ZF and DFT codebook-based beamforming in spatially correlated channels are compared based on the empirical cumulative density function of the sum rate of multiple users. Spatial correlation degrades capacity performance, and in the channels, the DFT precoder has a more robust performance and outperforms the ZF precoder in spectral efficiency. Obtained results can be used by the algorithm evaluation in the system-level simulations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>5G new radio</kwd><kwd>QuaDRiGa 3GPP модель канала</kwd><kwd>прекодирование ZF</kwd><kwd>прекодирование ДПФ</kwd><kwd>многоантенная система с многими пользователями (MU-MIMO)</kwd></kwd-group><kwd-group xml:lang="en"><kwd>5G new radio</kwd><kwd>QUADRIGA 3GPP channel model</kwd><kwd>ZF precoding</kwd><kwd>DFT codebook precoding</kwd><kwd>multiuser (MU) MIMO</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">ETSI TS 138 211 V.15.8.0 (2020-01). 5G. NR. Physical channels and modulation. 3GPP TS 38.211 version 15.8.0 Release 15. Technical Specification.</mixed-citation><mixed-citation xml:lang="en">ETSI TS 138 211 V.15.8.0 (2020-01). 5G. NR. Physical channels and modulation. 3GPP TS 38.211 version 15.8.0 Release 15. 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