{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,31]],"date-time":"2025-01-31T23:10:10Z","timestamp":1738365010358,"version":"3.35.0"},"reference-count":15,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T00:00:00Z","timestamp":1221177600000},"content-version":"vor","delay-in-days":5552,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trans Emerging Tel Tech"],"published-print":{"date-parts":[[1993,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>This paper presents an efficient data predistortion technique with memory applied to digital transmissions over nonlinear channels, specifically satellite links, employing QAM signal formats. The proposed technique is aimed at reducing the high complexity of a conventional pre\u2010distorter with memory by splitting the function to be realised into simpler blocks. This approach has been suggested by the circumstance that the numerical channel is constituted, in this case, by a nonlinear memoryless block and by two linear blocks with memory so that the predistorter itself can be realised by two FIR filters separated by a memoryless nonlinear element. As for the nonlinear block, we propose the employment of a neural net performing a typical surface reconstruction task, that is the approximation of the function inverting the nonlinearity source (in this case the high power amplifier). Performance analysis has shown a significant improvement with respect to memoryless predistortion (up to 4.5 dB); our proposal, moreover, outperforms conventional 3\u2010stage\u2010memory predistortion as the modulation levels increase and as the spectral shaping gets narrower.<\/jats:p>","DOI":"10.1002\/ett.4460040405","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T13:32:04Z","timestamp":1221226324000},"page":"395-402","source":"Crossref","is-referenced-by-count":1,"title":["Performance Analysis of new Techniques of Predistortion with Memory in Digital Radio Links"],"prefix":"10.1002","volume":"4","author":[{"given":"Angelo","family":"Bernardini","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Silvia De","family":"Fina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,9,12]]},"reference":[{"volume-title":"Digital transmission theory","year":"1987","author":"Benedetto S.","key":"e_1_2_1_2_2"},{"issue":"7","key":"e_1_2_1_3_2","doi-asserted-by":"crossref","first-page":"633","DOI":"10.1109\/TCOM.1977.1093884","article-title":"Maximum likelihood sequence estimation of binary sequences transmitted over bandlimited nonlinear channels","volume":"25","author":"Mesiya M. F.","journal-title":"IEEE Trans, on Communications"},{"key":"e_1_2_1_4_2","first-page":"216","article-title":"Maximum likelihood receivers for data sequences transmitted over nonlinear channels","volume":"34","author":"Van Etten W.","year":"1980","journal-title":"A.E.U."},{"issue":"11","key":"e_1_2_1_5_2","doi-asserted-by":"crossref","first-page":"1715","DOI":"10.1109\/TCOM.1981.1094911","article-title":"Frequency\u2010independent and frequency\u2010dependent nonlinear models of TWT amplifiers","volume":"29","author":"Saleh A. A. M.","journal-title":"IEEE Trans. Comm."},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/49.192728"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/j.1538-7305.1983.tb03113.x"},{"key":"e_1_2_1_8_2","unstructured":"M. T.Lyons H. Y.Chung S. G.Wilson:16\u2010QAM and trelliscoded 16\u2010QAM on nonlinear channels. \u201cGlobecom 85\u201d p.493\u2013498."},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.1987.1146546"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/26.61442"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1984.1056976"},{"key":"e_1_2_1_12_2","doi-asserted-by":"crossref","unstructured":"S.Pupolin A.Sarti H.Fu:Performance analysis of digital radio links with nonlinear transmit amplifier and data predistor\u2010ter with memory. Proc. ICC Boston June 11\u2013141989 p.292\u2013296.","DOI":"10.1109\/ICC.1989.49709"},{"key":"e_1_2_1_13_2","doi-asserted-by":"publisher","DOI":"10.1109\/26.76471"},{"key":"e_1_2_1_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/0893-6080(89)90003-8"},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF02551274"},{"key":"e_1_2_1_16_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00195855"}],"container-title":["European Transactions on Telecommunications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fett.4460040405","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ett.4460040405","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,1,31]],"date-time":"2025-01-31T22:36:13Z","timestamp":1738362973000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ett.4460040405"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1993,7]]},"references-count":15,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1993,7]]}},"alternative-id":["10.1002\/ett.4460040405"],"URL":"https:\/\/doi.org\/10.1002\/ett.4460040405","archive":["Portico"],"relation":{},"ISSN":["1124-318X","1541-8251"],"issn-type":[{"type":"print","value":"1124-318X"},{"type":"electronic","value":"1541-8251"}],"subject":[],"published":{"date-parts":[[1993,7]]}}}