A key challenge of the air interface of the cognitive radio is
an accurate detection of weak signals of licensed users over
a wide spectrum range. This paper describes a method for
first detecting and next locating in frequency a given
primary user, even when a non-candidate interference is
located at the same frequency. The range of SNR that is
covered proves that the estimate is efficient for realistic
scenarios. In addition, the good performance is kept even
for very short data records (50 symbols of the candidate
signal). The proposed technique shows much better
performance than energy detectors and less complexity than
cyclo-stationary based ones.
CitationLagunas, M. [et al.]. Spectrum labeling for cognitive radio systems. A: WWRF 21, WG4- New Air Interfaces, Relayed based Systems and Smart Antennas. "WWRF 21, WG4- New Air Interfaces, Relayed based Systems and Smart Antennas". Estocolmo: 2008, p. 7-11.
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