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Cluster Modulation: A Generalized Modulation Scheme Leading to NOMA or Adaptive Modulation

j.urnal of Computer and Communications 2024年第7期12卷 12-22页

作者： j.mal S. rahhal suliman j. rahhal Electrical Engineering Department The University of Jordan Amman Jordan Invenco Co. Tampa USA

The need for higher data rate and higher systems capacity leads to several solutions including higher constellation size, spatial multiplexing, adaptive modulation and Non-Orthogonal Multiple Access (NOMA). Adaptive Modulation makes use of the user’s location from his base station, such that, closer users get bigger constellation size and hence higher data rate. A similar idea of adaptive modulation that makes use of the user’s locations is the NOMA technique. Here the base station transmits composite signals each for a different user at a different distance from the base station. The transmitted signal is formed by summing different user’s constellations with different weights. The closer the users the less average power constellation is used. This will allow the closer user to the base station to distinguish his constellation and others constellation. The far user will only distinguish his constellation and other user’s data will appear as a small interference added to his signal. In this paper, it is shown that the Adaptive modulation and the NOMA are special cases of the more general Cluster Modulation technique. Therefore, a general frame can be set to design both modulation schemes and better understanding is achieved. This leads to designing a multi-level NOMA and/or flexible adaptive modulation with combined channel coding.

关键词： Cluster Modulation Adaptive Modulation NOMA

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Current status and highlights of the ELI-NP research program

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Matter and Radiation at Extremes 2020年第2期5卷 2-25页

作者： K.A.Tanaka K.M.Spohr D.L.Balabanski S.Balascuta L.Capponi M.O.Cernaianu M.Cuciuc A.Cucoanes I.Dancus A.Dhal B.Diaconescu D.Doria P.Ghenuche D.G.Ghita S.Kisyov V.Nastasa j.F.Ong F.Rotaru D.Sangwan P.-A.Soderstrom D.Stutman G.suliman O.Tesileanu L.Tudor N.Tsoneva C.A.Ur D.Ursescu N.V.Zamfir Extreme Light Infrastructure(ELI-NP)and Horia Hulubei National Institute for R&Din Physics and Nuclear Engineering(IFIN-HH) Str.Reactorului No.30077125 Bucharest–M˘agureleRomania j.hns Hopkins University 3400 N.Charles StreetBaltimoreMaryland 21218USA

The emergence of a new era reaching beyond current state-of-the-art ultrashort and ultraintense laser technology has been enabled by the approval of around V 850 million worth of structural funds in 2011–2012 by the European Commission for the installation of Extreme Light Infrastructure(ELI).The ELI proj.ct consists of three pillars being built in the Czech Republic,Hungary,and *** challenging proposal is based on recent technical progress allowing ultraintense laser fields in which intensities will soon be reaching as high as I0∼1023Wcm−*** tremendous technological advance has been brought about by the invention of chirped pulse amplification by Mourou and *** is hosting the ELI for Nuclear Physics(ELI-NP)pillar in M˘agurele near *** new facility,currently under construction,is intended to serve the broad national,European,and international scientific *** mission covers scientific research at the frontier of knowledge involving two *** first is laser-driven experiments related to NP,strong-field quantum electrodynamics,and associated vacuum *** second research domain is based on the establishment of a Compton-backscattering-based,high-brilliance,and intenseγbeam with Eγ≲19.5 MeV,which represents a merger between laser and accelerator *** system will allow the investigation of the nuclear structure of selected isotopes and nuclear reactions of relevance,for example,to astrophysics with hitherto unprecedented resolution and *** addition to fundamental themes,a large number of applications with significant societal impact will be *** implementation of the proj.ct started in j.nuary 2013 and is spearheaded by the ELI-NP/Horia Hulubei National Institute for Physics and Nuclear Engineering(IFIN-HH).Experiments will begin in early 2020.

关键词： intense frontier approval

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心脏MR应变:一种无创性评价左心房心肌纤维脂肪重塑的生物学指标

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国际医学放射学杂志 2018年第2期 214-214页

作者： A.T.Huber j.Lamy A.rahhal M.Evin F.Atassi C.Defrance 杜锐莉 Laboratoire d’Imagerie Biomédicale Sorbonne Universités

摘要目的探究应用心脏MR特征性追踪技术量化评价左心房(LA)应变是否与左心房纤维脂肪心肌重塑的组织学特征具有相关性。材料与方法这项前瞻性的病例-对照研

关键词：左心房 MR 追踪技术二尖瓣

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