Yen-Hsien Lee Yung-Fang Chen Po-Ting Hwang A Simple Adaptive Channel Estimation Scheme for Multiple Antenna OFDM Systems. 2863-2867 2006 conf/vtc/2006s VTC Spring http://dx.doi.org/10.1109/VETECS.2006.1683391 db/conf/vtc/vtc2006s.html#LeeCH06