1. What have the authors contributed in "Mitigating primary user emulation attacks in dynamic spectrum access networks using hypothesis testing" ?
The authors present a Neyman-Pearson composite hypothesis test ( NPCHT ) and a Wald ’ s sequential probability ratio test ( WSPRT ) to detect primary user emulation attacks ( PUEA ) in cognitive radio networks.. The authors present an NPCHT and WSPRT based analysis to detect PUEA in fading wireless channels in the presence of multiple randomly located malicious users.. The authors show that there is a range of network radii in which PUEA are most successful.
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2. What is the test for PUEAThe Neyman-Pearson composite hypothesis test?
Test to detect PUEAThe Neyman-Pearson composite hypothesis test can be used to distinguish between two hypotheses, given some constraints on the miss probability.
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3. Why is the probability of missing the primary user decreasing with increasing R?
This is because, for a given R0, if R is small, i.e., malicious users are closer to the secondary user, the total received power from all malicious users is likely to be larger than that received from the primary transmitter, thus decreasing the probability of successful PUEA.
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4. What is the probability of PUEA at any secondary user?
The shadowing loss (expressed in dB) at any secondary user both from the primary transmitter and from any malicious user is normally distributed with mean 0 and variance σ2p and σ 2 m,respectively.10.
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