IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Cooperative Spectrum Sensing Using Free Probability Theory
Lei WANGBaoyu ZHENGQingmin MENGChao CHEN
Author information
JOURNAL RESTRICTED ACCESS

2010 Volume E93.B Issue 6 Pages 1547-1554

Details
Abstract

Free probability theory, which has become a main branch of random matrix theory, is a valuable tool for describing the asymptotic behavior of multiple systems, especially for large matrices. In this paper, using asymptotic free probability theory, a new cooperative scheme for spectrum sensing is proposed, which shows how the asymptotic free behavior of random matrices and the property of Wishart distribution can be used to assist spectrum sensing for cognitive radio. Simulations over Rayleigh fading and AWGN channels demonstrate the proposed scheme has better detection performance than the energy detection techniques and the Maximum-minimum eigenvalue (MME) scheme even for the case of a small sample of observations.

Content from these authors
© 2010 The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top