@conference {ValcarceVazquez10, title = {Multiantenna spectrum sensing for Cognitive Radio: overcoming noise uncertainty}, booktitle = {International Workshop on Cognitive Information Processing (CIP)}, year = {2010}, address = {Elba Island, Italy}, author = {R. L{\'o}pez-Valcarce and Gonzalo V{\'a}zquez-Vilar and Josep Sala} }