Methods and arrangements for channel updates in wireless networks

摘要

Logic may determine channel information updates such as channel state information and phase correction information from pilot tones that do not travel close to the DC tone or the band edge tones. Logic may skip channel updates and phase tracking from pilot tones that have traveled close to the DC tone or the edge tones. Logic may use channel estimates and phase rotations that are obtained from previous locations of the pilot tones instead of pilot tones that are adjacent to the DC tone or the edge tones. Logic may access memory to store the channel information such as the phase correction information previously obtained and the channel state information previously obtained and derived from processing pilot tones at locations adjacent to the symbol indices next to the DC tone and the edge tones.

主权项

1. A method to perform channel updates with shifting pilot tones, the method comprising:
receiving an orthogonal frequency division multiplexing transmission with pilot tones shifting locations periodically between symbol indices of orthogonal frequency division multiplexing symbols; determining channel information from the pilot tones that excludes channel information for the pilot tones that are located adjacent to part of a transmission bandwidth, which is not used to transmit data tones, comprising a direct current tone or edge tones; and performing channel updates based upon the channel information.