An All-GNU Radio Software-defined Radio Transceiver for All-Spectrum Cognitive Channelization George Sklivanitis, † Emrecan Demirors, ‡ , Adam Gannon, † Dimitris A. Pados, † Stella N. Batalama, ‡ Tommaso Melodia, † and John D. Matyjas ⋆ † SUNY at Buffalo, Department of Electrical Engineering ‡ Northeastern University, Department of Electrical and Computer Engineering ⋆ Air Force Research Laboratory/RGIF, Rome, NY September 17, 2014 State University of New York at Buffalo 1 / 26