Patent ID: 8683283
Filing Date: 2014-03-25
Classification: H04B,H04L

Abstract:
1. A device for frequency estimation comprising: an intra-header module configured to estimate, for each of a plurality of physical layer headers of a received wireless signal, an intra-header frequency error utilizing intra-header phase difference measurements; a frequency error correction module, communicatively coupled with the intra-header module, and configured to iteratively correct a frequency error for the received wireless signal utilizing the calculated frequency errors; a threshold comparator module, communicatively coupled with the frequency correction module, and configured to signal the frequency error correction module to suspend the intra-header corrections when intra-header frequency errors fall below a threshold and signal for activation of an inter-frame module when intra-header frequency errors fall below the threshold; and the inter-frame module, communicatively coupled with the threshold comparator module, and configured to track a frequency error for the received wireless signal utilizing inter-frame phase difference measurements when signaled by the threshold comparator module.