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- Title
Blind Detection of Wideband Interference for Cognitive Radio Applications.
- Authors
Coulson, Alan J.
- Abstract
Cognitive radio technologies are being developed which allow heterogeneous systems to share spectrum access while minimizing interference to improve the overall efficiency of spectrum usage. Thus, one important function of a cognitive radio is dynamically to avoid transmitting in occupied spectrum by detecting signals received from unknown competing systems. Robust operation requires the detection of multiple wideband interferers of unknown statistics from a single received sample vector. This paper describes the hypothesis tests that must be evaluated to perform detection of such signals and discusses several methods for performing detection. Computer simulation results are presented to show that hidden Markov modelling and power spectral analysis with edge enhancement are more robust than a simple "interference temperature-" based energy detector.
- Subjects
BROADBAND communication systems; DIGITAL signal processing -- Design &; construction; SIGNAL detection; NONPARAMETRIC signal detection; RADIO wave propagation; MARKOV processes; POWER spectra; SIGNAL-to-noise ratio; RADIO detectors; COMPUTER software
- Publication
EURASIP Journal on Advances in Signal Processing, 2009, p1
- ISSN
1687-6172
- Publication type
Article
- DOI
10.1155/2009/727686