Patent ID: 9461855
Filing Date: 2016-10-04
CPC Classification: H04L

Claim Text:
1. A method for channel updates with shifting pilot tones, the method comprising: receiving, via a channel, an orthogonal frequency division multiplexing transmission with pilot tones shifting sub-carriers periodically between symbol indices of orthogonal frequency division multiplexing symbols; processing the orthogonal frequency division multiplexing transmission to determine if a signal to noise ratio for the channel is below a threshold for the channel; and performing channel updates based upon processing the orthogonal frequency division multiplexing transmission symbols with pilot tones, wherein, if the signal to noise ratio for the channel is below the threshold for the channel, performing the channel updates comprises updating phase tracking and not updating weight coefficients of an equalizer; and wherein, if the signal to noise ratio for the channel is not below the threshold for the channel, performing the channel updates comprises updating the phase tracking and weight coefficients of the equalizer.