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dc.contributor.authorHolm, Henriknb_NO
dc.date.accessioned2014-12-19T13:42:36Z
dc.date.accessioned2015-12-22T11:39:48Z
dc.date.available2014-12-19T13:42:36Z
dc.date.available2015-12-22T11:39:48Z
dc.date.created2008-05-02nb_NO
dc.date.issued2002nb_NO
dc.identifier124252nb_NO
dc.identifier.isbn82-471-5410-2nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/2368815
dc.description.abstractThe need for spectrally efficient transmission on mobile and wireless channels is prevalent. A promising scheme for such transmission is adaptive coded modulation. In this thesis, techniques for assessing the performance of such systems are presented. One of the vulnerable points of such systems is the need for a reliable feedback channel. Channel prediction is proposed as a technique to combat the harmful effects of feedback delay. The Nakagami distribution is often employed in a model for the fading envelope of a wireless channel; this leads to a gamma-distributed signal-to-noise ratio. Nakagami (1960) provides expressions for the probability density function (PDF) of the product, sum, and ratio of two correlated gamma-distributed random variables (RVs). However, such an expression for the difference between two such RVs has not been provided by Nakagami. Anew expression for this PDF is provided in this dissertation, and it is shown that it is closely related to a distribution first described by McKay (1932). Applications of the new PDF include outage probability calculation in an environment with self-interference and assessment of the quality of certain channel estimation techniques.nb_NO
dc.languageengnb_NO
dc.publisherFakultet for informasjonsteknologi, matematikk og elektroteknikknb_NO
dc.relation.ispartofseriesDr. ingeniøravhandling, 0809-103X; 2002:18nb_NO
dc.titleAdaptive Coded Modulation Performance and Channel Estimation Tools for Flat Fading Channelsnb_NO
dc.typeDoctoral thesisnb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for elektronikk og telekommunikasjonnb_NO


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