Cognitive Spectrum Sensing with Multiple Primary Users in Rayleigh Fading Channels

• Main Authors: Salam Al-Juboori, Sattar J. Hussain, Xavier Fernando
• Format: Article
• Language: English
• Published: MDPI AG 2014-09-01
• Series: Electronics
• Subjects: cognitive radio (CR); spectrum sensing; spherical detector; Rayleigh fading channels
• Online Access: http://www.mdpi.com/2079-9292/3/3/553

Accurate detection of white spaces is crucial in cognitive radio networks. Initial investigations show that the accurate detection in a multiple primary users environment is challenging, especially under severe multipath conditions. Among many techniques, recently proposed eigenvalue-based detectors that use random matrix theories to eliminate the need of prior knowledge of the signals proved to be a solid approach. In this work, we study the effect of Rayleigh multipath fading channels on spectrum sensing in a multiple primary user environment for a pre-proposed detector called the spherical detector using the eigenvalue approach. Simulation results show interesting outcomes.