Patent ID: 7912120
Filing Date: 2011-03-22
Classification: H04B,H04L

Abstract:
1. A receiver comprising: a channel estimator configured to perform a channel estimation on a sample data stream and configured to generate Rake receiver finger weights based on the channel estimation; a frequency error estimator configured to generate an estimated frequency error signal based on at least one of the finger weights, wherein the frequency error estimator comprises: a controller, coupled between the frequency error estimator and the oscillator, the controller configured to process the estimated frequency error signal received from the frequency error estimator with a proportional-integral-derivative, algorithm and inputting the processed estimated frequency error signal to the oscillator; an oscillator configured to generate a rotating phasor signal based on the processed estimated frequency error signal; and a second multiplier configured to multiply the rotating phasor signal with the sample data stream to correct the frequency of the sample data stream for further processing by the channel estimator.