@conference {WSA_2011, title = {Experimental Validation of Interference Alignment Techniques using a Multiuser {MIMO} Testbed}, booktitle = {International ITG Workshop on Smart Antennas (WSA 2011)}, year = {2011}, month = {February}, address = {Aachen, Germany}, author = {Gonz{\'a}lez, {\'O}scar and Ram{\'\i}rez, David and Santamar{\'\i}a, Ignacio and Garc{\'\i}a-Naya, J. A. and Castedo, Luis} }