The research in the sixth generation of wireless networks needs to tackle new challenges in
order to meet the requirements of emerging applications in terms of high data rate, low …

Cognitive radio is widely expected to be the next Big Bang in wireless communications.
Spectrum sensing, that is, detecting the presence of the primary users in a licensed …

In this paper, the distribution of the ratio of extreme eigenvalues of a complex Wishart matrix
is studied in order to calculate the exact decision threshold as a function of the desired …

Spectrum scarcity is impeding practical implementations of emerging wireless multimedia
applications requiring significantly more frequency spectrum. Cognitive radio (CR) has …

Collaborative spectrum sensing (CSS) between secondary users (SUs) in cognitive
networks exhibits an inherent tradeoff between minimizing the probability of missing the …

The author presents a unified treatment of this highly interdisciplinary topic to help define the
notion of cognitive radio. The book begins with addressing issues such as the fundamental …

Sample correlation matrices are widely used, but for high-dimensional data little is known
about their spectral properties beyond “null models”, which assume the data have …

This paper studies the limiting behavior of a class of robust population covariance matrix
estimators, originally due to Maronna in 1976, in the regime where both the number of …

In this paper, the distribution of the test-statistic for the covariance based detection (CBD) is
studied in order to obtain the mathematical expressions of false alarm probability (Pf) and …

In this letter, a new blind sensing method based on the Cholesky factorization of the sample
covariance matrix is presented for cognitive radios (CR). The proposed method overcomes …