Eigenvalue-Based Spectrum Sensing of Orthogonal Space-Time Block Coded Signals
2012 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 60, no 12, 6724-6728 p.Article in journal (Refereed) Published
We consider spectrum sensing of signals encoded with an orthogonal space-time block code (OSTBC). We propose a CFAR detector based on knowledge of the eigenvalue multiplicities of the covariance matrix which are inherent owing to the OSTBC and derive theoretical performance bounds. In addition, we show that the proposed detector is robust to a carrier frequency offset, and propose a detector that deals with timing synchronization using the detector for the synchronized case as a building block. The proposed detectors are shown numerically to perform well.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2012. Vol. 60, no 12, 6724-6728 p.
Cognitive radio; signal detection
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-87206DOI: 10.1109/TSP.2012.2218813ISI: 000311805000052OAI: oai:DiVA.org:liu-87206DiVA: diva2:587455