A method of selecting a carrier frequency offset tracking pilot signal in an access point of a wireless network is disclosed. The wireless network includes the access point and a plurality of terminals. The method includes receiving, at a plurality of antennas of the access point, signals from each of the plurality of terminals; estimating, from the received signals, a spatial channel signature for each of the plurality of terminals; selecting, for each terminal of the plurality of terminals, using the spatial channel signatures, a carrier frequency offset tracking pilot signal for that terminal from a plurality of pre-coded pilot signals; and transmitting an indication of the selected carrier frequency offset tracking pilot signals to the respective terminal.