{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T14:34:45Z","timestamp":1753886085623,"version":"3.41.2"},"reference-count":7,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2010,5,23]],"date-time":"2010-05-23T00:00:00Z","timestamp":1274572800000},"content-version":"vor","delay-in-days":142,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100001459","name":"Ministry of Education - Singapore","doi-asserted-by":"publisher","award":["RGM24\/06"],"award-info":[{"award-number":["RGM24\/06"]}],"id":[{"id":"10.13039\/501100001459","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Electrical and Computer Engineering"],"published-print":{"date-parts":[[2010,1]]},"abstract":"<jats:p>Cognitive radio (CR) is a promising concept for improving the utilization of scarce radio spectrum resources. Orthogonal frequency division multiplexing (OFDM) is regarded as a technology which is well matched for CR systems. It is shown that channel estimation errors can result in a severe performance degradation in a multiuser OFDM CR system. A simple back\u2010off scheme is proposed, and simulation results are provided which show that the proposed scheme is very effective in mitigating the negative impact of channel estimation errors.<\/jats:p>","DOI":"10.1155\/2010\/419430","type":"journal-article","created":{"date-parts":[[2010,5,23]],"date-time":"2010-05-23T14:33:17Z","timestamp":1274625197000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Resource Allocation in a Cognitive Radio System withImperfect Channel State Estimation"],"prefix":"10.1155","volume":"2010","author":[{"given":"Tao","family":"Qin","sequence":"first","affiliation":[]},{"given":"Cyril","family":"Leung","sequence":"additional","affiliation":[]},{"given":"Chunyan","family":"Miao","sequence":"additional","affiliation":[]},{"given":"Zhiqi","family":"Shen","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2010,5,23]]},"reference":[{"key":"e_1_2_7_1_2","doi-asserted-by":"publisher","DOI":"10.1109\/98.788210"},{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2004.839380"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2004.1273768"},{"key":"e_1_2_7_4_2","doi-asserted-by":"crossref","unstructured":"QinT.andqint@ece.ubc.ca LeungC. cleung@ece.ubc.ca Fair adaptive resource allocation for multiuser OFDM cognitive radio systems Proceedings of the 2nd International Conference on Communications and Networking in China (ChinaCom \u203207) August 2007 115\u2013119 2-s2.0-0037328385 https:\/\/doi.org\/10.1109\/CHINACOM.2007.4469341.","DOI":"10.1109\/CHINACOM.2007.4469341"},{"key":"e_1_2_7_5_2","doi-asserted-by":"crossref","unstructured":"HuZ. 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Multiuser subcarrier and bit allocation forMIMO-OFDM systems with perfect and partial channel information 2 Proceedings of the IEEE Wireless Communications and Networking Conference March 2004 1188\u20131193.","DOI":"10.1109\/WCNC.2004.1311357"},{"key":"e_1_2_7_6_2","first-page":"1873","article-title":"Mutual interference in OFDM-based spectrum pooling systems","volume":"59","author":"Weiss T.","year":"2004","journal-title":"Proceedings of the IEEE Vehicular Technology Conference (VTC \u203204)"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2002.807348"}],"container-title":["Journal of Electrical and Computer Engineering"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/jece\/2010\/419430.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/jece\/2010\/419430.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/2010\/419430","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T02:23:10Z","timestamp":1740104590000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/2010\/419430"}},"subtitle":[],"editor":[{"given":"Adam","family":"Panagos","sequence":"additional","affiliation":[]}],"short-title":[],"issued":{"date-parts":[[2010,1]]},"references-count":7,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2010,1]]}},"alternative-id":["10.1155\/2010\/419430"],"URL":"https:\/\/doi.org\/10.1155\/2010\/419430","archive":["Portico"],"relation":{},"ISSN":["2090-0147","2090-0155"],"issn-type":[{"type":"print","value":"2090-0147"},{"type":"electronic","value":"2090-0155"}],"subject":[],"published":{"date-parts":[[2010,1]]},"assertion":[{"value":"2009-10-17","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2010-02-23","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2010-05-23","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"419430"}}