Patent ID: 9313075
Filing Date: 2016-04-12
CPC Classification: H04L

Claim Text:
1. A method to update, using pilot tones, channel information regarding a wireless communication channel, the method comprising: receiving an orthogonal frequency division multiplexing transmission with pilot tones shifting locations periodically between subcarrier indices of orthogonal frequency division multiplexing symbols; using at least some of the pilot tones to determine phase rotations and channel estimates for the wireless communication channel; storing more than one of the phase rotations in memory; calculating at least one predicted phase rotation based upon the more than one of the phase rotations in memory, wherein calculating the at least one predicted phase rotation comprises calculating, for a pilot tone location that is adjacent to the direct current tone or to the edge tones, with the more than one phase rotations from the memory, the at least one predicted phase rotation; and performing phase tracking based upon more than one of the phase rotations and the at least one predicted phase rotation.