Yi Sun Li Yu Qin Zhang Liangrui Tang Wireless channel estimation based on B-spline interpolation in OFDM system. 3243-3247 2010 ICNC http://dx.doi.org/10.1109/ICNC.2010.5582676 conf/icnc/2010 db/conf/icnc/icnc2010.html#SunYZT10