Performance of Simple and Fast Sliding Window Detectors for Spectrum Sensing in Radar Bands

The recently-proposed sliding Gershgorin radii and centers ratio (SGRCR) detector makes use of multiple sensing rounds using a short window that slides over the full sensing interval, being adequate for detecting short duration signals, like those emitted by pulse radar systems. This articles proposes the sliding Gini index detector (SGID) as a variation of the SGRCR and compares the performances of both in the context of cooperative spectrum sensing for cognitive radio applications in radar bands. These detectors have approximately the same computational complexity, but the SGID can outperform the SGRCR in most of the system parameterizations and scenarios.