Modulation Numrique Du Signal
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Home > Art, Film & Photography > Modulation Numrique Du Signal: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing
Modulation Numrique Du Signal: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing

Modulation Numrique Du Signal: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing


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About the Book

Les achats comprennent une adhsion l'essai gratuite au club de livres de l'diteur, dans lequel vous pouvez choisir parmi plus d'un million d'ouvrages, sans frais. Le livre consiste d'articles Wikipedia sur: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing, Diagramme de Constellation, Minimum-Shift Keying, Modulation par Dplacement de Frquence, Psk31, Dbit Binaire, Complementary Code Keying, Diagramme de L'oeil, Accs Multiple Rpartition Dans le Temps, Coded Orthogonal Frequency Division Multiplexing, Gaussian Minimum-Shift Keying, Interfrence Inter-Symbole. Non illustr. Mises jour gratuites en ligne. Extrait: Le Phase-shift keying (ou PSK, soit modulation par dplacement de phase ) dsigne une famille de formes de modulations numriques qui ont toutes pour principe de vhiculer de l'information binaire via la phase d'un signal de rfrence (porteuse), et exclusivement par ce biais. Comme pour toute technique de modulation numrique, la phase en question ne peut prendre qu'un nombre fini de valeurs. Chacune de ces valeurs reprsente un unique nombre binaire, dont la taille (et donc la quantit d'information transmise) dpend du nombre de valeurs possibles pour la phase. Gnralement, pour une modulation PSK donne, les nombres binaires reprsents sont tous de mme taille. Les formes de PSK les plus utilises sont la BPSK (ou 2-PSK: deux valeurs de phase possibles), la QPSK (ou 4-PSK: quatre valeurs de phase possibles) et la DPSK (Differential-PSK: o l'information est contenue non pas dans une valeur absolue de phase, mais dans le dphasage entre deux signaux successifs) Pour dterminer les erreurs de manires mathmatiques, voici les dfinitions utiles pour la suite: Exemple de diagramme de constellation pour BPSKBPSK est la forme la plus simple du PSK. Elle utilise deux phases qui sont spares de 180; on l'appelle galement 2-PSK. Cette modulation est la p...http: //booksllc.net/?l=fr


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Product Details
  • ISBN-13: 9781159784270
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • No of Pages: 56
  • Spine Width: 3 mm
  • Weight: 95 gr
  • ISBN-10: 1159784272
  • Publisher Date: 03 Aug 2010
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Sub Title: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing
  • Width: 229 mm


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