A technique to determine sampling frequency offset (SFO) phase shift and
perform channel estimation for symbols of a signal communicated across a
multiple-input-multiple-output (MIMO) communication channel, in which
preambles utilized for channel estimation are sent over more than one
time block. Because the transmission of preambles used for channel
estimation are sent over multiple time blocks, a SFO phase shift that is
linear across tones of an OFDM signal is experienced between preambles of
the two time blocks. Upon detection of the SFO phase shift, a weighting
matrix used for channel estimation is modified to account for the SFO
phase shift, in order to perform the channel estimation with correction
for the SFO phase shift.