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In particular, we focus our attention on four\u2010dimensional signals and describe the applicability of several coded constellations based on Q<jats:sup>2<\/jats:sup>PSK with optimum selection of baseband signals. Equal\u2010energy signal sets, signals carved from lattices, convo\u2010lutionally\u2010encoded and trellis\u2010encoded schemes are compared by evaluating their performance by computer simulation in a channel model that includes the effects of linear filters, nonlinear amplifiers, and carrier and timing recovery circuits. Among the schemes considered here, trellis\u2010coded modulation seems to offer the best tradeoff between performance and complexity.<\/jats:p>","DOI":"10.1002\/ett.4460060313","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T11:46:17Z","timestamp":1221219977000},"page":"327-336","source":"Crossref","is-referenced-by-count":3,"title":["Applicability of four\u2010dimensional modulations to digital satellites: a simulation study"],"prefix":"10.1002","volume":"6","author":[{"given":"Giorgio","family":"Taricco","sequence":"first","affiliation":[]},{"given":"Ezio","family":"Biglieri","sequence":"additional","affiliation":[]},{"given":"Valentino","family":"Castellani","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2008,9,12]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCOMM.1994.577067"},{"key":"e_1_2_1_3_2","first-page":"1005","article-title":"Four\u2010dimensional modulation with an eight\u2010stale trellis code","volume":"64","author":"Calderbank A. R.","year":"1985","journal-title":"Bell Syst. Tech. J."},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1987.1057291"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4757-2016-7"},{"volume-title":"Digital transmission theory","year":"1987","author":"Benedetto S.","key":"e_1_2_1_6_2"},{"volume-title":"Error control coding: fundamentals and applications","year":"1983","author":"Lin S.","key":"e_1_2_1_7_2"},{"key":"e_1_2_1_8_2","first-page":"264","article-title":"Short binary convolutional codes with maximal free distance for rates 2\/3 and 3\/4","volume":"24","author":"Paaske E.","year":"1978","journal-title":"IEEE Trans. Inform. Theory"},{"key":"e_1_2_1_9_2","unstructured":"S.Qu:On Q2PSK and its Trellis coding. 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