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In this paper, we verify goodness-of-fit testing through the use of the Anderson-Darling (AD) test  for spectrum sensing in cognitive radio. In , it was shown that spectrum sensing based on the AD test outperforms the energy detection method. However, this positive result can only be obtained when the primary signal is assumed to be static during sensing interval, which is a very rare case in cognitive radio. This assumption reduces the generality of the proposed test in . The verification results of the AD test with some more general and practical primary signals in this paper show that the application of the AD sensing scheme for spectrum sensing in cognitive radio is still a challenge and requires further research.
Date of Publication: October 2012