Patent ID: 6452991
Filing Date: 2002-09-17
Classification: H04B,H04L,H04W

Abstract:
A method for locating a known multi-symbol syncword in a received signal, the method comprising the steps of:locating a potential syncword in a first batch of samples of the received signal having a correlation energy with the known syncword which exceeds a first predefined detection threshold; determining a correlation energy for a group of samples in a second batch of samples of the received signal with the known syncword, wherein the group of samples in the second batch of samples are selected based on the location of the potential syncword within the first batch of samples; comparing the correlation energy associated with the group of samples in the second batch of samples with a second predefined detection threshold that is higher than the first predefined detection threshold; and identifying the location of the known syncword based upon the comparison of the correlation energy associated with the group of samples in the second batch of samples with the second predefined detection threshold so as to only identify locations which have a correlation energy which exceeds both the first predefined threshold and the second predefined threshold.