Patent ID: 7224718
Filing Date: 2007-05-29
Classification: H04B

Abstract:
1. A method for performing slot synchronization in a wireless system, the wireless system broadcasting data in frames, each frame broken into F slots, wherein F is greater than one and a primary synchronization code channel (PSCH) is present in each slot and encoded according to a primary synchronization code (PSC), the method comprising: utilizing output from a matched filter matched to the PSC to combine K slots to generate profile data, wherein K is less than F; selecting n peak values respectively from n peak positions in the profile data, wherein n is greater than one; utilizing at least a correlator, the n peak positions and S slots subsequent the K slots to generate n×S correlation values; generating respective combination values for the n peak positions by coherently combining the correlation values corresponding to each of the n peak positions according to the phase of the peak position; utilizing the respective combination values to generate respective SNR values for each of the n peak positions; and selecting as a slot synchronization position the peak position of one of the n peak positions having the best respective SNR value.