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This paper also describes various transmission schemes that are proposed to support high data rates in the difficult transmission environment. Two schemes, SDMT and QAM\/CAP, are compared in terms of <jats:italic>SNR<\/jats:italic> margins and computational complexity.<\/jats:p>","DOI":"10.1002\/ett.4460090205","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T16:39:02Z","timestamp":1221237542000},"page":"145-154","source":"Crossref","is-referenced-by-count":2,"title":["The VDSL transmission challenge"],"prefix":"10.1002","volume":"9","author":[{"given":"Kok\u2010Wui","family":"Cheong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joonsuk","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John M.","family":"Cioffi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ho\u2010Yeol","family":"Kwon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"You\u2010Sik","family":"Chun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyung\u2010Hyun","family":"Yoo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,9,12]]},"reference":[{"key":"e_1_2_1_2_2","unstructured":"Very\u2010high\u2010speed Digital Subscriber Lines: System requirements. 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