On the Performance of Covariance Based Spectrum Sensing for Cognitive Radio

摘要

In this paper, the distribution of the test-statistic for the covariance based detection (CBD) is studied in order to obtain the mathematical expressions of false alarm probability $(P_{f})$ and detection probability $(P_{d})$ . The formulation of decision threshold $lambda$ for any $P_{f}$ is also presented. The expression of $P_{d}$ allows to evaluate the performance of the CBD technology. Finally, the decision threshold, as well as the derived $P_{f}$ and $P_{d}$ , is verified with Monte-Carlo simulations.