ITU-R SM 855-1 FRENCH-1997 MULTI-SERVICE TELECOMMUNICATION SYSTEMS《多业务电信系统》.pdf

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1、Rec. UIT-R SM.855-1 1RECOMMANDATION UIT-R SM.855-1SYSTMES DE TLCOMMUNICATION SERVICES MULTIPLES(Question UIT-R 45/1)(1992-1997)Rec. UIT-R SM.855-1LAssemble des radiocommunications de lUIT,considranta) que le spectre radiolectrique est utilis plus efficacement lorsque de nombreux utilisateurs peuvent

2、 oprer aumme moment sans brouillage dans la mme partie du spectre;b) quil est ncessaire, pour rpondre aux besoins croissants de nouveaux services de radiocommunication, demettre en application les technologies nouvelles;c) que la Recommandation 65 de la Confrence administrative mondiale des radiocom

3、munications(Genve, 1979) (CAMR-79) reconnat que les nouvelles technologies permettent daugmenter lutilisation de la bande;d) que les systmes services multiples permettent doffrir, dans une mme forme donde, plusieurs types deservices de radiocommunication;e) que les systmes de tlcommunication service

4、s multiples ne posent pas de problmes inhabituels debrouillage aux systmes service unique;f) quon peut calculer les brouillages entre les systmes service unique et les systmes services multiples enutilisant la procdure de la compatibilit lectromagntique;g) quil est possible de dfinir les possibilits

5、 de partage avec dautres utilisateurs quoffrent les systmes services multiples dans une bande dattribution commune, en se fondant sur lanalyse de la compatibilit lectro-magntique,recommande1 que des systmes de tlcommunication services multiples soient utiliss lorsque cela est appropri pourassurer une utilisation efficace du spectre des radiofrquences;2 que le partage du spectre soit fond sur lanalyse de la compatibilit lectromagntique entre les systmes services multiples et les autres systmes.

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