@article{paperid:1043310,
author = {Abbasi, Mohsen and Khoshbin Ghomash, Hossein},
title = {Cooperative Beamforming in Relay Assisted MIMO-OFDMA Cognitive Radio Systems},
journal = {Journal of Electrical Systems and Signals},
year = {2013},
volume = {1},
number = {2},
month = {December},
issn = {2322-5483},
pages = {23--29},
			numpages = {6},
keywords = {Relay assisted MIMO-OFDMA cognitive radio; cooperative beamforming; power allocation; relay selection.},
}