Patent ID: 9025650
Filing Date: 2015-05-05
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A frequency offset estimation method by a wireless device having a plurality of receivers coupled to a reference frequency source, the receivers configured to receive a signal from a same transmitting device, the method comprising: producing a first dot product between a first segment and a second segment of a signal received by a first receiver of the plurality of receivers; weighting the first dot product with a signal measure associated with the first receiver; producing a second dot product between a first segment and a second segment of a signal received by a second receiver of the plurality of receivers; weighting the second dot product with a signal measure associated with the second receiver; producing a third dot product between a third segment and a fourth segment of the signal received by the first receiver; weighting the third dot product with the signal measure associated with the first receiver; and deriving a frequency offset associated with the received signals based on the weighted first dot product, the weighted second dot product, and the weighted third dot product.