caa a22 4500 477097448 CHVBK 20180405111531.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF02995501 doi (NATIONALLICENCE)springer-10.1007/BF02995501 Radio receivers for cellular networks: Possible architectures using a ΣΔ-converter [Elektronische Daten] [Frédéric Gourgue, Maurice Bellanger, Sabrina Azrouf] Récepteurs Radio pour Réseaux Cellulaires Architectures Possibles Utilisant un Convertisseur ΣΔ We first explain the constraints set on a receiver for digital cellular systems before showing how they are handled with the standard architectures (direct conversion and superheterodyne). We introduce then a new approach based on the direct sampling of the intermediate frequency in a superheterodyne receiver using a passband analog- to- digital ΣΔ -converter. We give design rules to minimize the complexity of the system and study within that scope the interest of under sampled ΣΔ -converters addressing more especially the stability problems. Undersampling allows to reduce the processing load in the digital part of the converter, compared to a standard ΣΔ conversion. The last chapter is dedicated to a presentation of cellular networks in order to justify the constraints set on receivers designed for this environment. Springer-Verlag, 1996 Mobile radiocommunication nationallicence Land mobile service nationallicence Cellular network nationallicence Receiver nationallicence AD converter nationallicence Sigma delta modulation nationallicence Digital transmission nationallicence Direct detection nationallicence Superheterodyne receiver nationallicence Signal sampling nationallicence Automatic gain control nationallicence Selectivity nationallicence Frequency reuse nationallicence Radiocommunication service mobile nationallicence Service mobile terrestre nationallicence Réseau cellulaire nationallicence Récepteur nationallicence Convertisseur AN nationallicence Modulation delta sigma nationallicence Transmission numérique nationallicence Détection directe nationallicence Récepteur superhétérodyne nationallicence Echantillonnage signal nationallicence Commande automatique gain nationallicence Sélectivité nationallicence Réutilisation fréquence nationallicence Gourgue Frédéric Alcatel, Mobile Communication Division, 32, avenue Kléber, F-92707, Colombes, France aut Bellanger Maurice Conservatoire national des arts et métiers, 292, rue Saint-Martin, F-75141, Paris Cedex 03, France aut Azrouf Sabrina Conservatoire national des arts et métiers, 292, rue Saint-Martin, F-75141, Paris Cedex 03, France aut Annales Des Télécommunications Springer-Verlag 51/3-4(1996-03-01), 105-120 0003-4347 51:3-4<105 1996 51 12243 https://doi.org/10.1007/BF02995501 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02995501 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gourgue Frédéric Alcatel, Mobile Communication Division, 32, avenue Kléber, F-92707, Colombes, France aut NATIONALLICENCE 700 1- Bellanger Maurice Conservatoire national des arts et métiers, 292, rue Saint-Martin, F-75141, Paris Cedex 03, France aut NATIONALLICENCE 700 1- Azrouf Sabrina Conservatoire national des arts et métiers, 292, rue Saint-Martin, F-75141, Paris Cedex 03, France aut NATIONALLICENCE 773 0- Annales Des Télécommunications Springer-Verlag 51/3-4(1996-03-01), 105-120 0003-4347 51:3-4<105 1996 51 12243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer