{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T12:32:13Z","timestamp":1772886733784,"version":"3.50.1"},"reference-count":24,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","issue":"6","license":[{"start":{"date-parts":[[2009,6,1]],"date-time":"2009-06-01T00:00:00Z","timestamp":1243814400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/IEEE.html"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Trans. Commun."],"published-print":{"date-parts":[[2009,6]]},"DOI":"10.1109\/tcomm.2009.06.0700932","type":"journal-article","created":{"date-parts":[[2009,6,25]],"date-time":"2009-06-25T10:57:22Z","timestamp":1245927442000},"page":"1622-1627","source":"Crossref","is-referenced-by-count":42,"title":["Cramer-Rao lower bound and EM algorithm for envelope-based SNR estimation of nonconstant modulus constellations"],"prefix":"10.1109","volume":"57","author":[{"given":"Wilfried","family":"Gappmair","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberto","family":"Lopez-Valcarce","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos","family":"Mosquera","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref10","author":"abramowitz","year":"1970","journal-title":"Handbook of Mathematical Functions"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/26.655403"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/26.729398"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/4234.901810"},{"key":"ref14","author":"scharf","year":"1990","journal-title":"Statistical Signal Processing"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1109\/LCOM.2007.348298"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/79.543975"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2002.996844"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1155\/WCN.2005.117"},{"key":"ref19","year":"1988","journal-title":"9600 bit\/s modem standardized for use on point-to-point 4-wire leased telephone-type circuits"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2004.842175"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/26.871393"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1967.1054037"},{"key":"ref5","first-page":"637","article-title":"Maximum likelihood SNR estimators for digital receivers","author":"chen","year":"2005","journal-title":"Proc IEEE Pacific RIM Conf Commun Computers Signal Processing"},{"key":"ref8","author":"papoulis","year":"1991","journal-title":"Probability random variables and stochastic processes"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.2008.060275"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/26.950343"},{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/26.664291"},{"key":"ref9","author":"kay","year":"1993","journal-title":"Fundamentals of Statistical Signal Processing Estimation Theory"},{"key":"ref20","year":"2006","journal-title":"Digital video broadcasting (DVB) Second generation framing structure channel coding and modulation systems for broadcasting interactive services news gathering and other broadband satellite applications"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.1994.580211"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1109\/ISIT.1994.394869"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1093\/biomet\/85.4.755"},{"key":"ref23","first-page":"301","article-title":"Moment-based SNR estimation of signals with non-constant envelope","author":"gappmair","year":"2006","journal-title":"Proc Advanced Satellite Mobile Systems Conf"}],"container-title":["IEEE Transactions on Communications"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx5\/26\/5089481\/05089498.pdf?arnumber=5089498","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T15:41:59Z","timestamp":1638200519000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/5089498"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,6]]},"references-count":24,"journal-issue":{"issue":"6"},"URL":"https:\/\/doi.org\/10.1109\/tcomm.2009.06.0700932","relation":{},"ISSN":["0090-6778"],"issn-type":[{"value":"0090-6778","type":"print"}],"subject":[],"published":{"date-parts":[[2009,6]]}}}