The Information Theoretic Approach to Signal Anomaly Detection for Cognitive Radio
Figure 9
Performance of the KLD-based anomaly detection scheme under various data sampling rates. Decimation factor refers to the amount by which the input signal is undersampled relative to the signal bandwidth. A factor of unity corresponds to a sampling frequency equal to the signal bandwidth. For two of the test cases (A and B), a KLDR well above dB can be maintained for a window length of s, histogram bin count of , and a decimation factor of . Signal C is unable to accommodate such high decimation rates.
