@article {648,
	title = {Multiantenna GLR detection of rank-one signals with known power spectrum in white noise with unknown spatial correlation},
	journal = {IEEE Trans. on Signal Processing},
	volume = {60},
	year = {2012},
	month = {06/2012},
	pages = {3065	- 3078},
	abstract = {<div>Multiple-antenna detection of a Gaussian signal\&nbsp;with spatial rank one in temporally white Gaussian noise with\&nbsp;arbitrary and \&nbsp;unknown spatial covariance is considered. This\&nbsp;is motivated by spectrum sensing problems in the context of\&nbsp;Dynamic Spectrum Access in which several secondary networks\&nbsp;coexist but do not cooperate, creating a background of spatially\&nbsp;correlated broadband interference. When the temporal correlation\&nbsp;of the signal of interest is assumed known up to a scale factor,\&nbsp;the corresponding Generalized Likelihood Ratio Test is shown to\&nbsp;yield a scalar optimization problem. Closed-form expressions of\&nbsp;the test are obtained for the general signal spectrum case in\&nbsp;the low signal-to-noise ratio (SNR) regime, as well as for signals\&nbsp;with binary-valued power spectrum in arbitrary SNR. The two\&nbsp;resulting detectors turn out to be equivalent. An asymptotic\&nbsp;approximation to the test distribution for the low-SNR regime is\&nbsp;derived, closely matching empirical results from spectrum sensing\&nbsp;simulation experiments.</div>},
	keywords = {cognitive radio, dynacs},
	doi = {10.1109/TSP.2012.2189767},
	author = {Josep Sala and Gonzalo V{\'a}zquez-Vilar and R. L{\'o}pez-Valcarce}
}
