Cardoso, L. S., M. Maso, E. Baştuğ, M. Debbah, and O. Ozdemir,
"Prototype of Orthogonal Precoder-based Technique for two-tiered Cellular Networks",
World Wireless Research Forum (WWRF) 27, Dusseldorf, Germany, 2011.
Maso, M., L. S. Cardoso, E. Baştuğ, M. Debbah, and O. Ozdemir,
"VFDM: a prototype of cognitive transceiver",
International Workshop on Communication Systems (IWCS), Hanoi, Vietnam, 10/2011.