APPARATUS AND METHOD FOR TRACKING CODE

摘要

PURPOSE: A code tracking apparatus and method are provided to obtain a gain in an auto correlation value by reducing the influence of signal interference. CONSTITUTION: A code tracking apparatus comprises a carrier wave I/Q mixer(210), a multi-path signal identifier(220), a separator(230), a correlate/integrator(240), and an discriminator(250). The carrier wave I/Q mixer multiplies an I-signal(In-Phase) and a Q-signal(Quadrature-Phase) in an input signal. The carrier wave I/Q mixer eliminates the carrier wave of the input signal. The multi-path signal identifier detects the location of a visible signal and the location of a multi-path signal in a signal in which the carrier wave is removed. The separator divides the multi-path signal from the input signal based on the location of the visible signal and the location of the multi-path signal. The correlate/integrator integrates a separated multi-path signal and a spreading and computes an integrated value. The discriminator detects the error value of code synchronization based on a correlation value and an integrated value.