A METHOD AND SYSTEM FOR AUTOCORRELATION FILTERING

摘要

An autocorrelation filter (105) for use with a spread spectrum receiver (100). The autocorrelation filter can be used as a prefilter stage to reduce phase distortion present in a spread spectrum signal. The autocorrelation filter can be used to process the output from a lattice filter (104). The lattice filter is configured to remove magnitude distortion from the spread spectrum signal. The autocorrelation filter performs a series of correlations on the output of the lattice filter. The results of these correlations are integrated over a period of time to generate a running impulse response for characterizing and removingthe phase distortion in the spread spectrum signal.