Patent ID: 8155252
Filing Date: 2012-04-10
Classification: H04L

Abstract:
1. A method, comprising: receiving a frequency division multiple access signal comprising a plurality of data signals on a plurality of frequency bands; separating the plurality of data signals in a frequency domain to form separated data signals; separately performing a frequency offset error estimation on each of a plurality of diversity branches associated with a respective separated data signal; performing an equalization for a data sequence comprised in each of the separated data signals to form an equalized data sequence; transforming the equalized data sequences into the time domain for the frequency error offset correction; and correcting a frequency offset error of each of the equalized data sequences in the time domain by weighting samples of the equalized data sequences with estimated frequency offset correction factors that are derived from the frequency offset error estimations for each of the plurality of diversity branches, wherein correcting the estimated frequency offset error of each of the equalized data sequences includes performing a combining operation based on the frequency offset error estimations for each of the plurality of diversity branches.