Receiver capable of parallel demodulation of messages

G - Physics – 08 – C

Patent

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Details

G08C 17/00 (2006.01) G08C 19/16 (2006.01) H03D 3/18 (2006.01) H03D 7/16 (2006.01) H03K 9/00 (2006.01) H04B 1/06 (2006.01) H04B 1/28 (2006.01) H04J 11/00 (2006.01) H04L 7/04 (2006.01)

Patent

CA 2373269

A receiver (100) which is capable of receiving in parallel data transmitted at arbitrary frequencies within a radio channel includes: a radio frequency (RF) front-end to convert an RF signal to a digitized signal; a Fast Fourier Transform (FFT) generator (130) coupled to the RF front-end to separate the digitized signal into a plurality of sub-channels; a band of phase locked loops (PLLs)(132) coupled to the FFT generator (130), each PLL operating on a sub-channel with a sub-channel center; and a flag detector (131) coupled to the bank of PLLs (132) to detect variations from the sub-channel center and to recover the usage data transmitted from the end-point.

Un récepteur (100) qui est capable de recevoir en parallèle des données transmises à des fréquences arbitraires dans une bande d'ondes comprend : une extrémité avant de radio fréquence (RF) qui convertit un signal RF en un signal numérisé; un générateur (130) de transformation rapide de Fourier (TRF) couplé à l'extrémité avant RF pour séparer le signal numérisé en une pluralité de sous-canaux; une série de boucles à phase asservie (PLL)(132) couplées au générateur TRF (130), chaque PLL opérant sur un sous-canal ayant un centre de sous-canal; et un détecteur (131) de signalisation couplé à la série de PLL (132) pour détecter des variations par rapport au centre du sous-canal et pour récupérer les données d'usage transmises depuis le point terminal.

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