Amaresh V. Malipatil Hao Zhou Yih-Fang Huang CFO estimation in OFDM systems and effects of nonlinear power amplifiers. 111-116 2008 CISS http://dx.doi.org/10.1109/CISS.2008.4558505 conf/ciss/2008 db/conf/ciss/ciss2008.html#MalipatilZH08