{"id":4682,"date":"2014-01-30T12:19:18","date_gmt":"2014-01-30T12:19:18","guid":{"rendered":"https:\/\/plumconsulting.co.uk\/?p=4682"},"modified":"2019-04-12T12:19:55","modified_gmt":"2019-04-12T12:19:55","slug":"partage-entre-les-systemes-imt-et-tnt","status":"publish","type":"post","link":"https:\/\/plumconsulting.co.uk\/fr\/partage-entre-les-systemes-imt-et-tnt\/","title":{"rendered":"Partage entre les syst\u00e8mes IMT et TNT"},"content":{"rendered":"<p>Cette \u00e9tude a examin\u00e9 la faisabilit\u00e9 de la coexistence dans le m\u00eame canal entre les syst\u00e8mes IMT et TNT fonctionnant dans la bande 470-694\/698\u00a0MHz, en se concentrant sur l\u2019impact de l\u2019interf\u00e9rence des syst\u00e8mes IMT dans les syst\u00e8mes TNT. En raison de l\u2019augmentation relativement \u00e9lev\u00e9e du nombre d\u2019antennes, des valeurs de la puissance isotrope rayonn\u00e9e \u00e9quivalente ou \u00ab\u00a0PIRE\u00a0\u00bb (\u00ab\u00a0Puissance isotrope rayonn\u00e9e efficace\u00a0\u00bb) et des m\u00e2ts fixes pour antenne plac\u00e9s au-dessus de l\u2019encombrement, la principale question \u00e0 \u00e9tudier dans ce contexte est la protection des r\u00e9cepteurs TNT contre les interf\u00e9rences des stations de base IMT.<\/p>\n<p>Les documents de r\u00e9f\u00e9rence pertinents ont \u00e9t\u00e9 \u00e9tudi\u00e9s en vue d\u2018\u00e9tablir des param\u00e8tres de mod\u00e9lisation et des crit\u00e8res de partage des \u00e9metteurs des stations de base IMT et des r\u00e9cepteurs TNT. Cette analyse a \u00e9t\u00e9 suivie d\u2019une analyse des interf\u00e9rences fond\u00e9e sur un certain nombre de sc\u00e9narios de partage \u00e9labor\u00e9s au cours de l\u2019\u00e9tude. SEAMCAT (l\u2019outil d\u2019analyse de Monte Carlo d\u00e9velopp\u00e9 dans le cadre de la CEPT) a \u00e9t\u00e9 utilis\u00e9 pour entreprendre la mod\u00e9lisation.<\/p>\n<p>Cette br\u00e8ve \u00e9tude a notamment examin\u00e9 la faisabilit\u00e9 de la coexistence dans le m\u00eame canal de syst\u00e8mes IMT et TNT fonctionnant dans la bande 470 MHz-694\/698\u00a0MHz. L\u2019analyse du brouillage avait pour objectif d\u2019\u00e9valuer l\u2019impact global caus\u00e9 par les \u00e9metteurs de la station de base IMT sur la TNT. La mod\u00e9lisation a \u00e9t\u00e9 effectu\u00e9e \u00e0 l\u2019aide de SEAMCAT.<\/p>\n<p>Les simulations de Monte Carlo SEAMCAT ont \u00e9t\u00e9 mises en \u0153uvre pour un ensemble suppos\u00e9 de distances de s\u00e9paration entre le bord du faisceau IMT et le bord de la zone de couverture TNT, en faisant varier l\u2019emplacement du r\u00e9cepteur dans la zone de couverture TNT comme indiqu\u00e9 ci-dessous.<\/p>\n<p>Dans chaque essai de Monte Carlo, la puissance utile de la TNT et la puissance d\u2019interf\u00e9rence globale de la station de base IMT ont \u00e9t\u00e9 calcul\u00e9es sur le r\u00e9cepteur TNT. Les calculs ont \u00e9t\u00e9 r\u00e9p\u00e9t\u00e9s sur un certain nombre d\u2019essais et les statistiques C\/N+I r\u00e9sultantes ont \u00e9t\u00e9 compar\u00e9es au rapport de protection du m\u00eame canal pour d\u00e9terminer la probabilit\u00e9 d\u2019interf\u00e9rence dans la zone de couverture TNT.<\/p>\n<p>Les r\u00e9sultats de l\u2019\u00e9tude ont servi \u00e0 \u00e9laborer un projet, dans le cadre de la contribution de la GSM Association \u00e0 la r\u00e9union du JTG 4-5-6-7 de l\u2019UIT en f\u00e9vrier 2014 concernant le point 1.1 de l\u2019ordre du jour de la CMR-15.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cette \u00e9tude a examin\u00e9 la faisabilit\u00e9 de la coexistence dans le m\u00eame canal entre les syst\u00e8mes IMT et TNT fonctionnant dans la bande 470-694\/698\u00a0MHz, en se concentrant sur l\u2019impact de l\u2019interf\u00e9rence des syst\u00e8mes IMT dans les syst\u00e8mes TNT. En raison de l\u2019augmentation relativement \u00e9lev\u00e9e du nombre d\u2019antennes, des valeurs de la puissance isotrope rayonn\u00e9e \u00e9quivalente<a href=\"https:\/\/plumconsulting.co.uk\/fr\/partage-entre-les-systemes-imt-et-tnt\/\">[&#8230;]<\/a><\/p>\n","protected":false},"author":28,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[164,165],"tags":[204,208,209,220],"class_list":["post-4682","post","type-post","status-publish","format-standard","hentry","category-gestion-du-spectre","category-ingenierie-radio","tag-interference-analysis-fr","tag-mobile-broadband-fr","tag-uhf-spectrum-fr","tag-dtt-fr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Partage entre les syst\u00e8mes IMT et TNT - Plum Consulting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/plumconsulting.co.uk\/fr\/partage-entre-les-systemes-imt-et-tnt\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Partage entre les syst\u00e8mes IMT et TNT - Plum Consulting\" \/>\n<meta property=\"og:description\" content=\"Cette \u00e9tude a examin\u00e9 la faisabilit\u00e9 de la coexistence dans le m\u00eame canal entre les syst\u00e8mes IMT et TNT fonctionnant dans la bande 470-694\/698\u00a0MHz, en se concentrant sur l\u2019impact de l\u2019interf\u00e9rence des syst\u00e8mes IMT dans les syst\u00e8mes TNT. 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