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This article gives an overview of the main challenges for the deployment and operation of state-of-the-art OFDMA networks, along with an outlook into future developments for 4G and beyond 4G networks.<\/jats:p>","DOI":"10.1145\/1880153.1880165","type":"journal-article","created":{"date-parts":[[2010,11,9]],"date-time":"2010-11-09T13:52:03Z","timestamp":1289310723000},"page":"71-76","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["OFDMA in the field"],"prefix":"10.1145","volume":"40","author":[{"given":"Andreas","family":"Maeder","sequence":"first","affiliation":[{"name":"NEC Network Laboratories Europe, Heidelberg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nader","family":"Zein","sequence":"additional","affiliation":[{"name":"NEC Network Laboratories Europe, London, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2010,10,22]]},"reference":[{"key":"e_1_2_1_1_1","volume-title":"Theory and Applications of OFDM","author":"Bahai A. 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