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In this paper, we compare different Doppler scale estimation methods using\neither cyclic\u2010prefixed (CP) or zero\u2010padded (ZP) orthogonal\u2010frequency division\u2010multiplexing (OFDM)\nwaveforms. For a CP\u2010OFDM preamble, a self\u2010correlation method allows for blind Doppler scale estimation\nbased on an embedded repetition structure while a cross\u2010correlation method is available with\nthe knowledge of the waveform. For each received ZP\u2010OFDM block, the existence of null subcarriers\nallows for blind Doppler scale estimation. In addition, a pilot\u2010aided method and a decision\u2010aided method\nare applicable based on cross\u2010correlation with templates constructed from symbols on pilot subcarriers\nonly and from symbols on all subcarriers after data decoding, respectively. This paper carries out\nextensive comparisons among these methods using both simulated and real experimental data. Further,\nthe applicabilities of these methods to distributed multiuser systems are investigated.<\/jats:p>","DOI":"10.1155\/2012\/703243","type":"journal-article","created":{"date-parts":[[2012,5,31]],"date-time":"2012-05-31T22:49:47Z","timestamp":1338504587000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":44,"title":["Performance Comparison of Doppler Scale Estimation Methods for Underwater Acoustic OFDM"],"prefix":"10.1155","volume":"2012","author":[{"given":"Lei","family":"Wan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaohui","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shengli","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T. 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Underwater telemetry method using Doppler compensation U.S. Patent 2003 no. 6512720."},{"key":"e_1_2_9_26_2","doi-asserted-by":"publisher","DOI":"10.1109\/PROC.1984.12967"},{"key":"e_1_2_9_27_2","volume-title":"Digital Communications","author":"Proakis J. G.","year":"2001"},{"key":"e_1_2_9_28_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1962.1057786"},{"key":"e_1_2_9_29_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2008.081204"},{"key":"e_1_2_9_30_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.phycom.2011.09.001"},{"key":"e_1_2_9_31_2","doi-asserted-by":"publisher","DOI":"10.1109\/49.974615"},{"key":"e_1_2_9_32_2","doi-asserted-by":"crossref","unstructured":"TuK. DumanT. M. ProakisJ. G. andStojanovicM. 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