Cooperative Spectrum Sensing Using Random Matrix Theory

Leonardo S. Cardoso (1) , Merouane Debbah (1) , Pascal Bianchi (1) , Jamal Najim (2)

1 SUPELEC-Campus Gif
2 LTCI - Laboratoire Traitement et Communication de l'Information

In this paper, using tools from asymptotic random matrix theory, a new cooperative scheme for frequency band sensing is introduced for both AWGN and fading channels. Unlike previous works in the field, the new scheme does not require the knowledge of the noise statistics or its variance and is related to the behavior of the largest and smallest eigenvalue of random matrices. Remarkably, simulations show that the asymptotic claims hold even for a small number of observations (which makes it convenient for time-varying topologies), outperforming classical energy detection techniques.

Domaines: Réseaux et télécommunications [cs.NI]

Leonardo S. Cardoso, Merouane Debbah, Pascal Bianchi, Jamal Najim. Cooperative Spectrum Sensing Using Random Matrix Theory. ISWPC 2008, May 2008, Greece. 5 p. ⟨hal-00328176⟩