Patent ID: 6768714
Filing Date: 2004-07-27
Classification: H04L

Abstract:
A method for use in obtaining frequency synchronization in an Orthogonal Frequency Division Multiplexed (OFDM) communication system, the method comprising:receiving OFDM communication signals; generating, from the received OFDM communication signals, a plurality of tone values for a plurality of tone bins, the plurality of tone bins including a first set of tone bins assigned to a first frequency range and a second set of tone bins assigned to a second frequency range, the first and second frequency ranges corresponding to lower and upper edge portions of a frequency band of interest; performing complex conjugate multiplication between the tone values of the first and the second sets of tone bins; identifying a maximum value from results of the complex conjugate multiplication; and shifting receiver frequency based on a location of the maximum value relative to a predetermined pilot tone location for synchronizing with the frequency band of interest.