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Linear interpolation is used to achieve the resampling of the received signal. By interpolating the sampled signal with different compensation factors at the receiving end, the repeating structure of the CP\u2010OFDM symbol is used to maximize the correlation value at the fixed window to obtain the estimated value of the Doppler factor. The fixed window is determined based on the length of the cyclic prefix and the maximum path delay. In addition, we deduced the expression of the received discrete sequence to perform correlation operations after interpolation, which is the theoretical basis of our proposed algorithm. Moreover, in order to reduce the number of iterations, which means computational complexity in this algorithm, we recommend using the dichotomy to quickly find the maximum correlation value. Simulation proves that the proposed algorithm perform better than other CP\u2010OFDM\u2010based time\u2010domain autocorrelation algorithms.<\/jats:p>","DOI":"10.1002\/ett.4519","type":"journal-article","created":{"date-parts":[[2022,4,23]],"date-time":"2022-04-23T05:19:50Z","timestamp":1650691190000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Doppler estimation based on linear interpolation for underwater acoustic communication"],"prefix":"10.1002","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3924-9001","authenticated-orcid":false,"given":"Shibao","family":"Li","sequence":"first","affiliation":[{"name":"College of Oceanography and Space Informatics China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"PengHao","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Oceanography and Space Informatics China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuqi","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Oceanography and Space Informatics China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yujie","family":"Cong","sequence":"additional","affiliation":[{"name":"College of Oceanography and Space Informatics China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianhang","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Computer Science and Technology China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuerong","family":"Cui","sequence":"additional","affiliation":[{"name":"College of Oceanography and Space Informatics China University of Petroleum East China Qingdao China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,4,22]]},"reference":[{"key":"e_1_2_9_2_1","article-title":"Dynamic Doppler prediction in high\u2010speed rail using long short\u2010term memory neural network","volume":"32","author":"Xiong L","year":"2021","journal-title":"Trans Emerg Telecommun Technol"},{"doi-asserted-by":"publisher","key":"e_1_2_9_3_1","DOI":"10.1002\/ett.3712"},{"doi-asserted-by":"publisher","key":"e_1_2_9_4_1","DOI":"10.1109\/48.820736"},{"key":"e_1_2_9_5_1","first-page":"198","article-title":"Multicarrier communication over underwater acoustic channels with nonuniform Doppler shifts","author":"Li B","year":"2008","journal-title":"IEEE J Ocean Eng"},{"doi-asserted-by":"publisher","key":"e_1_2_9_6_1","DOI":"10.1002\/mop.21573"},{"key":"e_1_2_9_7_1","first-page":"210","article-title":"Frequency offset estimation and synchronization of underwater acoustic communication with hyperbolic frequency modulation signal","author":"Xue\u2010sen Z","year":"2010","journal-title":"Techn Acoust"},{"key":"e_1_2_9_8_1","first-page":"75","article-title":"Doppler estimation and timing synchronization of underwater acoustic communication based on hyperbolic frequency modulation signal","author":"Wang K","year":"2015","journal-title":"ICNSC"},{"doi-asserted-by":"crossref","unstructured":"XinM LiW WangX ZhangY XuL.Preamble design with HFMs for underwater acoustic communications. 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