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Spectrum sensing using low complexity principal components for cognitive radios

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Figure

Fig. 1 Analysis of the PC algorithm. Improvement in probability of detection with increasing number of principal components at 10 % probability offalse alarm and N = 20, 000
Fig. 2 Lognormal plot of complexity. Complexity plot of proposed LPCA, existing PC and MME method
Fig. 4 Performance comparison. Comparison of performance in term of probability of detection for single and multiple receive antennas cases at10 % probability of false alarm G = 2, N = 60, 000
Fig. 5 ROC. Receiver operating curve probability of detection (Pd) vs. probability of false alarm (Pf ) at SNR −15 and −20 dB

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