Methods and arrangements for phase tracking in wireless networks

摘要

Logic may determine phase correction information from pilot tones. Logic may determine phase correction information from some of the pilot locations. Logic may process the shifting pilot tones for less than all of the pilot tones. Logic may process pilot tones at any location within orthogonal frequency division multiplexing (OFDM) packet. Logic may determine to process only pilot tones at the even or odd symbol indices or subcarriers. And logic may transmit a packet with a frame with a capabilities information field comprising an indication that a receiver may can process shifting pilot tones for phase tracking.

主权项

1. A method to phase track with shifting pilot tones, the method comprising:
receiving an orthogonal frequency division multiplexing (OFDM) transmission of a packet with a preamble and data, wherein pilot tones shift locations in the data between OFDM symbols of the packet; processing the pilot tones in the data to determine phase correction information based upon the pilot tones in the data during the OFDM transmission from more than one of the OFDM symbols; updating phase tracking in response to the phase correction information; and not performing channel updates based upon channel state information from the pilot tones in the data in the more than one OFDM symbols.