{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T06:38:49Z","timestamp":1777703929122,"version":"3.51.4"},"reference-count":20,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2019,6,4]],"date-time":"2019-06-04T00:00:00Z","timestamp":1559606400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Intelligent &amp; Fuzzy Systems"],"published-print":{"date-parts":[[2019,11,22]]},"abstract":"<jats:p>In this paper, a novel signal candidate generation method and a new joint coding and probability peak to average power ratio (PAPR) reduction scheme are proposed for a Luby transform (LT) coded orthogonal frequency division multiplexing (OFDM) system. When a few LT packets are mapped into an OFDM symbol, all subcarriers are automatically divided into several blocks. We permutate these packets and assign them different subcarrier blocks to generate different signal candidates instead of multiplying by many phase rotation vectors and using active constellation extension, and the transmitted symbol will be the one whose PAPR is the smallest. Moreover, through introducing one phase rotation vector, the proposed algorithm is modified, and the PAPR reduction performance is enhanced. Simulation results prove that our proposed scheme can not only fully explore the spatial freedom brought by the mapping relationship between LT packets and OFDM symbols but also can obtain effective PAPR reduction performance. Since the permutation operation does not change the degree value of each packet, the new scheme can still maintain good decoding performance.<\/jats:p>","DOI":"10.3233\/jifs-179171","type":"journal-article","created":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T11:40:37Z","timestamp":1559907637000},"page":"5897-5904","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["A new PAPR reduction for LT coded OFDM systems"],"prefix":"10.1177","volume":"37","author":[{"given":"Minghui","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Telecommunication Engineering, Xidian University, Xi\u2019an, Shannxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zheng","family":"Xiang","sequence":"additional","affiliation":[{"name":"Department of Telecommunication Engineering, Xidian University, Xi\u2019an, Shannxi, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,6,4]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2016.2593746"},{"key":"e_1_3_2_3_2","first-page":"2054","article-title":"Lifetime evaluation of cooperative OFDM WSNs","author":"Iraqi Y.","year":"2012","unstructured":"Y.Iraqi, I.Y.Abualhaol and S.Muhaidat, Lifetime evaluation of cooperative OFDM WSNs, Wireless Communications and Networking Conference IEEE, 2012, pp. 2054\u20132058.","journal-title":"Wireless Communications and Networking Conference IEEE"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2775859"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2017.2751620"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2016.2590820"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1049\/el:19961384"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1049\/ip-com:20050237"},{"key":"e_1_3_2_9_2","first-page":"348","article-title":"LT codes for OFDM multicast systems with PAPR reduction capability","author":"Lee S.-K.","year":"2009","unstructured":"S.-K.Lee, H.-L.Chiu, Y.-C.Tsai and H.-Y.Chen, LT codes for OFDM multicast systems with PAPR reduction capability, in Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, ACM, 2009, pp. 348\u2013352.","journal-title":"Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, ACM"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2011.2104690"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/TVT.2010.2053397"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1109\/TBC.2008.915770"},{"key":"e_1_3_2_13_2","first-page":"1","article-title":"A blind polyphase time-domain selected mapping for filtered single-carrier signal transmission","author":"Boonkajay A.","year":"2017","unstructured":"A.Boonkajay and F.Adachi, A blind polyphase time-domain selected mapping for filtered single-carrier signal transmission, Vehicular Technology Conference IEEE, 2017, pp. 1\u20135.","journal-title":"Vehicular Technology Conference IEEE"},{"key":"e_1_3_2_14_2","first-page":"271","article-title":"LT codes. 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