Mode controller for signal acquisition and tracking in an...

H - Electricity – 04 – B

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H04B 1/69 (2006.01)

Patent

CA 2456915

A system and method is provided for controlling the mode of operation in a UWB receiver. In one variation, the system and method determines the mode of operation by reading a set number of samples of the signal, estimating mode parameters, calculating a mode probability, and then transitioning in a finite state machine between a track and an acquisition state depending on the value of the mode probability. Exemplary versions of the mode controller include a signal to noise ratio calculator, a signal and noise power estimator, and an AGC initialization circuit.

L'invention concerne un système et un procédé qui permettent de commander le mode de fonctionnement d'un récepteur à très large bande et, dans une variante, de déterminer le mode de fonctionnement en lisant un nombre établi d'échantillons du signal, en estimant les paramètres de mode, en calculant une probabilité de mode, puis en faisant passer d'un état à un autre, dans un automate fini, à partir d'une piste vers un état d'acquisition selon la valeur de la probabilité de mode. Des versions du module de commande de mode comprennent, par exemple, un calculateur du rapport signal/bruit, un estimateur de puissance signal/bruit et un circuit d'initialisation de commande automatique de gain.

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