Spectrum Sensing of Signals with Structured Covariance Matrices Using Covariance Matching Estimation Techniques
2011 (English)In: Proceedings of the IEEE Global Communications Conference (GLOBECOM), 2011, 1-5 p.Conference paper (Refereed)
In this work, we consider spectrum sensing of Gaussian signals with structured covariance matrices. We show that the optimal detector based on the probability distribution of the sample covariance matrix is equivalent to the optimal detector based on the raw data, if the covariance matrices are known. However, the covariance matrices are unknown in general. Therefore, we propose to estimate the unknown parameters using covariance matching estimation techniques (COMET). We also derive the optimal detector based on a Gaussian approximation of the sample covariance matrix, and show that this is closely connected to COMET.
Place, publisher, year, edition, pages
2011. 1-5 p.
spectrum sensing, sample covariance, COMET
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-69639DOI: 10.1109/GLOCOM.2011.6133506ISBN: 978-1-4244-9267-1 (online)ISBN: 978-1-4244-9266-4 (print)OAI: oai:DiVA.org:liu-69639DiVA: diva2:430377
IEEE Global Communications Conference (GLOBECOM), 3-7 December, Anaheim, California, USA