Patent ID: 6738437
Filing Date: 2004-05-18
Classification: H04L

Abstract:
A method of recovering symbols from a binary data stream having a data rate, the method comprising:oversampling the binary data stream at a predetermined oversample rate to generate an oversampled signal; correlating the oversampled binary data stream with a known sync word to create a correlation output; convolving the correlation output with an impulse response of a linear filter to generate a convolution signal; searching for a peak in the convolution signal during a searcher window, the searcher window beginning once the convolution output reaches a threshold; and identifying a timing alignment of a sync word, wherein if a single peak in the convolution signal is found during the searcher window, the single peak is used to identify the timing alignment and if a plurality of peaks in the convolution signal are found during the searcher window, a time between a first maximum peak of the plurality of peaks and a last maximum peak of the plurality of peaks is averaged to identify the timing alignment.