{"id":53716,"date":"2006-03-07T00:00:00","date_gmt":"2006-03-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-teorico-de-capacidad-de-sistemas-celulares-cdma-con-control-de-potencia-rapido\/"},"modified":"2006-03-07T00:00:00","modified_gmt":"2006-03-07T00:00:00","slug":"analisis-teorico-de-capacidad-de-sistemas-celulares-cdma-con-control-de-potencia-rapido","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/radiocomunicaciones\/analisis-teorico-de-capacidad-de-sistemas-celulares-cdma-con-control-de-potencia-rapido\/","title":{"rendered":"An\u00e1lisis te\u00f3rico de capacidad de sistemas celulares cdma con control de potencia r\u00e1pido"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Concepci\u00f3n T\u00e9llez Labao <\/strong><\/h2>\n<p>Los sistemas de comunicaciones m\u00f3viles celulares de tercera generaci\u00f3n, designados como umts (universal mobile telecommunication systems) por la etsi (european telecommunication standars institute) est\u00e1n basados en la t\u00e9cnica de acceso radio cdma (code division multiple access). La capacidad de estos sistemas est\u00e1 limitada por las interferencias, por lo que para realizar una evaluaci\u00f3n apropiada de sus prestaciones es fundamental disponer de una caracterizaci\u00f3n estad\u00edstica completa de la interferencia generada. Dicha caracterizaci\u00f3n constituye un problema anal\u00edtico bastante complejo, ya que deber\u00e1 tener en consideraci\u00f3n multitud de factores: condiciones de propagaci\u00f3n del canal radio, requisitos de calidad demandados por los usuarios, t\u00e9cnicas de diversidad empleadas, etc. Por otra parte, los sistemas basados en tecnolog\u00eda cdma necesitan incorporar un mecanismo que permita controlar la potencia transmitida por los m\u00f3viles y combatir el efecto cerca-lejos. Por este motivo, el control de potencia es otro de los aspectos clave en el estudio de estos sistemas. Los est\u00e1ndares de los sistemas de tercera generaci\u00f3n especifican un control de potencia basado en el sir (signal to interferance ratio) y no en la propia potencia de se\u00f1al. Es decir, el objetivo del control de potencia en estos sistemas es actuar sobre la potencia transmitida por los m\u00f3viles para que su se\u00f1al sea recibida en la estaci\u00f3n base con el nivel de sir adecuado que garantice la calidad de servicio deseada. Sin embargo, la mayor\u00eda de los estudios anal\u00edticos considera un control de potencia basado en la propia potencia de se\u00f1al, a pesar de que el sir se encuentra m\u00e1s directamente relacionado con los par\u00e1metros que determinan la calidad de servicio, como el ver (bit error rate). Otra de las especificaciones del control de potencia en los sistemas de tercera generaci\u00f3n es que el algoritmo independiente debe ser capaz de compensar los desvanecimientos multicamino para usuarios de ba<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>An\u00e1lisis te\u00f3rico de capacidad de sistemas celulares cdma con control de potencia r\u00e1pido<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 An\u00e1lisis te\u00f3rico de capacidad de sistemas celulares cdma con control de potencia r\u00e1pido <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Concepci\u00f3n T\u00e9llez Labao <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 03\/07\/2006<\/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>Juan  Manuel Romero Jerez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Sandoval hernandez <\/li>\n<li>Luis Mendo tom\u00e1s (vocal)<\/li>\n<li>Jos\u00e9 Francisco Paris angel (vocal)<\/li>\n<li>matilde S\u00e1nchez fern\u00e1ndez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Concepci\u00f3n T\u00e9llez Labao Los sistemas de comunicaciones m\u00f3viles celulares de tercera generaci\u00f3n, designados como umts (universal mobile [&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 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