Patent ID: 8837617

Claim:
A system for determining a frequency error of an orthogonal frequency division multiplexing (OFDM) signal having a first frequency, the system comprising: a plurality of filters configured to output a plurality of second signals, each of the plurality of second signals corresponding to a respective one of a plurality of different frequency bands of the OFDM signal, wherein each of the plurality of second signals includes a corresponding synchronization symbol associated with the OFDM signal, and a Fourier transform circuit configured to i) receive the plurality of second signals from each of the plurality of filters and ii) output the plurality of second signals, wherein the system is configured to determine the frequency error of the OFDM signal based on the synchronization symbols of the plurality of second signals using one of respective correlation angles associated with each of the plurality of second signals, and a sum of a band shift frequency error and a sampling frequency error.