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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">sibsutis</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СибГУТИ</journal-title><trans-title-group xml:lang="en"><trans-title>The Herald of the Siberian State University of Telecommunications and Information Science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6920</issn><publisher><publisher-name>СибГУТИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55648/1998-6920-2025-19-2-64-80</article-id><article-id custom-type="elpub" pub-id-type="custom">sibsutis-937</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Повышение точности синхронизация OFDM сигнала во временной области</article-title><trans-title-group xml:lang="en"><trans-title>Improving accuracy of OFDM signal synchronization in the time domain</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Батырев</surname><given-names>Иван Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Batyrev</surname><given-names>Ivan Alexandrovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры "Средства связи и информационная безопасность" Омского государственного технического университета, руководитель Дизайн-Центра СБИС СнК АО "ОНИИП"</p></bio><bio xml:lang="en"><p> </p><p>Postgraduate student of the Department of Systems, Networks and Telecommunications Devices,</p><p>Omsk State Technical University (Omsk State Technical University, 644050, Omsk, Mira Ave., 11). Head of</p><p>the Design Center of JSC "ONIIP"</p></bio><email xlink:type="simple">b.ivan007@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Майстренко</surname><given-names>Василий Андреевич</given-names></name><name name-style="western" xml:lang="en"><surname>Maistrenko</surname><given-names>Vasily Andreevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор Омского государственного технического университета</p></bio><bio xml:lang="en"><p>Doctor of Technical Sciences, Professor of Omsk State Technical University</p></bio><email xlink:type="simple">mva@omgtu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Омский государственный технический университет, АО "ОНИИП"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical University, &#13;
the Design Center of JSC "ONIIP"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Омский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2025</year></pub-date><volume>19</volume><issue>2</issue><issue-title>Вестник СибГУТИ</issue-title><fpage>64</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Батырев И.А., Майстренко В.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Батырев И.А., Майстренко В.А.</copyright-holder><copyright-holder xml:lang="en">Batyrev I.A., Maistrenko V.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://vestnik.sibsutis.ru/jour/article/view/937">https://vestnik.sibsutis.ru/jour/article/view/937</self-uri><abstract><p>В данной статье представлен обзор и анализ основных методов синхронизации OFDM-сигнала по циклическому префиксу (ЦП) и тренировочному символу. Приведены результаты моделирования методов синхронизации по ЦП, показана эффективность рассмотренных методов в канале АБГШ. Даны рекомендации по снижению дисперсии полученных оценок за счет использования усреднения. Рассмотрены методы синхронизации по тренировочному символу. Предложена новая структура тренировочного символа, взвешенного псевдослучайным кодом, и метод оценки частотно-временного сдвига на его основе. Новая структура тренировочного символа обеспечивает возможность более эффективной совместной оценки смещения частоты и времени OFDM-сигнала в многолучевом канале связи ITU-R M.1225 по сравнению с наиболее известными методами.</p></abstract><trans-abstract xml:lang="en"><p>The article presents a review and analysis of the main methods for synchronizing an</p><p>OFDM signal using a cyclic prefix (CP) and a training symbol. The results of modeling</p><p>synchronization methods over the CPU are presented, and the effectiveness of the considered</p><p>methods in the AWGN channel is shown. Recommendations are given to reduce the dispersion</p><p>of the obtained estimates through the use of averaging. Methods of synchronization using a</p><p>training symbol are considered. A new structure of a training symbol weighted by a pseudo-</p><p>random code and a method for estimating the time-frequency shift based on it are proposed. The</p><p>new training symbol structure allows for more efficient joint estimation of the frequency and</p><p>time offset of an OFDM signal in an ITU-R M.1225 multipath communication channel</p><p>compared to the most well-known methods.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>OFDM</kwd><kwd>оценка смещения времени</kwd><kwd>оценка смещения частоты</kwd><kwd>синхронизация</kwd><kwd>тренировочный символ</kwd><kwd>циклический префикс.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>OFDM</kwd><kwd>time offset estimation</kwd><kwd>frequency offset estimation</kwd><kwd>synchronization</kwd><kwd>training symbol</kwd><kwd>cyclic prefix.</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">Prasad R. OFDM for wireless communication system // Artech House universal personal communication series. – 2004;</mixed-citation><mixed-citation xml:lang="en">Prasad R. 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