Demultiplexing apparatus, multiplexing apparatus,...

H - Electricity – 04 – J

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H04J 1/00 (2006.01) H03H 17/02 (2006.01)

Patent

CA 2745354

A demultiplexing apparatus includes, in each of n stages, 2 n FC+RXHBFs that down-sample a signal, from which a high-frequency component is removed after frequency conversion is carried out, and output the signal. The demultiplexing apparatus extracts, from an input signal including a plurality of band signals, the band signals to thereby demultiplex the input signal. The demultiplexing apparatus includes a reception-filter-bank control unit that calculates, based on channel information including bands and frequency arrangement of the band signals, a dividing position on a frequency axis and a frequency offset value indicating a frequency conversion value and instructs the FC+RXHBF, which is set as a target of output of divided signals of the input signal, about the calculated values. The FC+RXHBF carries out frequency conversion based on the frequency offset value.

L'invention porte sur un démultiplexeur comprenant 2n FC+RXHBF (12) dans chaque nième étage de sous-échantillonnage pour délivrer un signal obtenu par suppression d'une composante haute fréquence après exécution d'une conversion de fréquence. Le démultiplexeur démultiplexe un signal d'entrée contenant une pluralité de signaux de bande par extraction d'un signal de bande. Le démultiplexeur est équipé d'une unité de commande de bande filtre de réception (2) qui obtient une position de division sur l'axe de fréquence et une valeur de décalage de fréquence indiquant une quantité de conversion de fréquence en fonction d'informations de canal contenant la bande du signal de bande et de l'agencement de fréquence et rapporte la valeur obtenue au FC+RXHBF (12) qui délivre le signal de division. Le FC+RXHBF (12) exécute une conversion de fréquence en fonction de la valeur de décalage de fréquence.

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