Circuit and method for tracking finger off-set in a...

Details Circuit and method for tracking finger off-set in a... Circuit and method for tracking finger off-set in a...

H - Electricity

04

B

H04B 7/005 (2006.01) H04B 1/707 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2221214

A finger tracking circuit for a rake receiver, a method of tracking a carrier signal and a wireless infrastructure. The finger tracking circuit includes: (1) a timing error subcircuit that determines a timing error in a current power control group ("PCG") of a carrier signal to be tracked and (2) a feedback subcircuit that applies a gain signal that is a function of a data rate of the carrier signal and a signal-to-noise ratio ("SNR") to the timing error subcircuit, a convergence rate of the finger tracking circuit therefore depending on the data rate of the carrier signal.

L'invention est constituée par un circuit de poursuite pour un récepteur, par une méthode de poursuite deporteuse et par une infrastructure sans fil. Ce circuit de poursuite comprend 1) un sous-circuit quidétermine l'erreur de synchronisation dans un groupe de contrôle de courant d'alimentation de la porteuseà poursuivre et 2) un sous-circuit de rétroaction qui transmet au sous-circuit précédent un signal de gainqui est fonction du débit de données dans la porteuse et du rapport signal sur bruit, de sorte que la vitessede convergence du circuit de poursuite dépend du débit de données dans la porteuse.

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