Marcus Windisch Gerhard Fettweis On the Impact of I/Q Imbalance in Multi-Carrier Systems for Different Channel Scenarios. 33-36 2007 conf/iscas/2007 ISCAS http://doi.ieeecomputersociety.org/10.1109/ISCAS.2007.378175 db/conf/iscas/iscas2007.html#WindischF07