@conference {valcarce09-spawc,
	title = {Wideband Spectrum Sensing in Cognitive Radio: Joint Estimation of Noise Variance and Multiple Signal Levels},
	booktitle = {2009 IEEE International Workshop on Signal Processing Advances for Wireless Communications (Spawc 2009)},
	year = {2009},
	month = {June},
	address = {Perugia, Italy},
	author = {Lopez-Valcarce, Roberto and Vazquez-Vilar, Gonzalo}
}
