134 search results - page 23 / 27 » Two-stage spectrum sensing for cognitive radios |
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
In this paper, we study the eigenvalue-based spectrum sensing techniques for multiple-antenna cognitive radio networks. First, we study the extreme eigenvalue distributions of a c...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Abstract—Temporal Dynamic Spectrum Access (DSA) in Cognitive Radio Networks exploits time gaps between the primary users transmissions. In this work, the fundamental performance ...
ICASSP
2010
IEEE
13 years 7 months ago
2010
IEEE
One of the key problems in cognitive radio (CR) is the detection of primary activity in order to determine which parts of the spectrum are available for opportunistic access. This...
CORR
2010
Springer
2010
Springer
Binary is Good: A Binary Inference Framework for Primary User Separation in Cognitive Radio Networks
13 years 4 months ago
Primary users (PU) separation concerns with the issues of distinguishing and characterizing primary users in cognitive radio (CR) networks. We argue the need for PU separation in t...
TCOM
2010
13 years 5 months ago
2010
—Cooperative spectrum sensing has been shown to be able to greatly improve the sensing performance in cognitive radio networks. However, if cognitive users belong to different se...