{"id":69176,"date":"2004-08-07T00:00:00","date_gmt":"2004-08-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/modulacion-adaptativa-no-ideal-en-canales-con-desvanecimientos\/"},"modified":"2004-08-07T00:00:00","modified_gmt":"2004-08-07T00:00:00","slug":"modulacion-adaptativa-no-ideal-en-canales-con-desvanecimientos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/malaga\/modulacion-adaptativa-no-ideal-en-canales-con-desvanecimientos\/","title":{"rendered":"Modulaci\u00f3n adaptativa no ideal en canales con desvanecimientos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Francisco Paris Angel <\/strong><\/h2>\n<p>En esta tesis se estudia la transmisi\u00f3n digital mediante modulaci\u00f3n adaptativa en canales radio que s\u00f3lo sufren desvanecimientos temporales (canales planos). los sistemas considerados modifican la constelaci\u00f3n y la potencia transmitida en funci\u00f3n de cierta informaci\u00f3n disponible sobre el estado del canal. el subsistema de adaptaci\u00f3n situado en el receptor estima el canal, decide la constelaci\u00f3n y potencia y, finalmente, env\u00eda esta informaci\u00f3n a trav\u00e9s de un canal de se\u00f1alizaci\u00f3n preestablecido desde el receptor hacia el transmisor. idealmente, se asume que el canal de se\u00f1alizaci\u00f3n posee capacidad ilimitada y que el proceso de adaptaci\u00f3n se realiza de forma perfecta(estimaci\u00f3n perfecta de canal y adaptaci\u00f3n instant\u00e1nea). La motivaci\u00f3n de esta tesis es precisamente abordar algunos aspectos clave sobre el empleo de modulaci\u00f3n adaptativa en condiciones no ideales. Se tratan fundamentalmente dos temas: la  propuesta y an\u00e1lisis de esquemas de adaptaci\u00f3n completamente discretos, caracter\u00edstica necesaria si el canal de se\u00f1alizaci\u00f3n es de capacidad limitada, y el an\u00e1lisis del efecto de la adaptaci\u00f3n imperfecta(estimaci\u00f3n imperfecta de canal y adaptaci\u00f3n no instant\u00e1nea).  se comienza describiendo en detalle el modelo de sistema considerado, incluido el modelo de canal y, para facilitar su an\u00e1lisis, se propone una formulaci\u00f3n basada en tres escalas de tiempo. Se estudian las prestaciones de los esquemas de variaci\u00f3n continua propuestos por goldsmith et al. Aunque dichos esquemas no son implementables en un sistema real, al suponer la existencia de un canal de se\u00f1alizaci\u00f3n con capacidad ilimitada, establecen una cota superior en las prestaciones que pueden alcanzar los esquemas discretos. A continuaci\u00f3n se proponen esquemas completamente discretos que emplean m  posibles constelaciones y l posibles niveles de potencia para cada constelaci\u00f3n. los par\u00e1metros de estos esquemas son optimizados para alcanzar la m\u00e1x<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Modulaci\u00f3n adaptativa no ideal en canales con desvanecimientos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Modulaci\u00f3n adaptativa no ideal en canales con desvanecimientos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Francisco Paris Angel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/07\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jos\u00e9 Tom\u00e1s Entrambasaguas Mu\u00f1oz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Puerta notario <\/li>\n<li>  (vocal)<\/li>\n<li>  (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Francisco Paris Angel En esta tesis se estudia la transmisi\u00f3n digital mediante modulaci\u00f3n adaptativa en canales [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[7834],"tags":[30861,118580,30682],"class_list":["post-69176","post","type-post","status-publish","format-standard","hentry","category-malaga","tag-antonio-puerta-notario","tag-jose-francisco-paris-angel","tag-jose-tomas-entrambasaguas-munoz"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/69176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=69176"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/69176\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=69176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=69176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=69176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}