Jamming probabilities and throughput of cognitive radio communications against a wideband jammer

In this paper we give closed-form analysis results of the jamming probabilities and throughput of cognitive radio transmissions when facing a wideband jammer. We first set up a Markov model of the cognitive radio transmissions which consists of three states: spectrum sensing, channel access, and channel switching. The jamming probabilities of the three states are derived under the assumption of a wideband jammer. The normalized transmission throughput is then derived. This expression is simple enough for us to analyze and optimize some important jamming and anti-jamming parameters for optimal anti-jamming design. Simulations are conducted to verify the analysis results.