Chao-Cheng Tu Benoît Champagne Subspace Blind MIMO-OFDM Channel Estimation with Short Averaging Periods: Performance Analysis. 24-29 2008 WCNC http://dx.doi.org/10.1109/WCNC.2008.10 conf/wcnc/2008 db/conf/wcnc/wcnc2008.html#TuC08