Stefaan De Rore Eduardo Lopez-Estraviz François Horlin Liesbet Van der Perre Joint estimation of carrier frequency offset and IQ imbalance for 4G mobile wireless systems. 2066-2071 2006 ICC https://doi.org/10.1109/ICC.2006.255074 conf/icc/2006 db/conf/icc/icc2006.html#RoreLHP06