Title:Efficient estimation and pilot-free online re-calibration of I/Q imbalance in broadband direct-conversion transmittersAuthor(s):J. Luo, A. Kortke, W. Keusgen, Mikko ValkamaJournal:IEEE Transactions on Vehicular TechnologyISSN:0018-9545Page Reference:page 2506-2520, 15 page(s)Publishing:6/2014