Patent ID: 6389003
Filing Date: 2002-05-14
Classification: H04B,H04J

Abstract:
A method for decreasing false positives during the hypothesis test of an internal frame synchronization of a received multipath signal in at least one channel in a CDMA telecommunications system having channels with pilot blocks, each pilot block comprising framing symbols and synchronization word symbols, comprising the steps of:a) calculating a channel estimate based only on the framing symbols of the received pilot blocks in a multipath signal; b) correcting the synchronization word symbols of the received pilot blocks in the multipath signal by complex multiplication of the receive data by the channel estimate calculated in step (a); and c) using only the corrected synchronization word symbols from step (b) for the internal frame synchronization hypothesis test; wherein an expected frame synchronization results from steps (a) through (c), thereby decreasing the number of false positives.