3 years ago

Secrecy and End-to-End Analyses Employing Opportunistic Relays Under Outdated Channel State Information and Dual Correlated Rayleigh Fading

Khoa N. Le,
Exact secrecy and end-to-end (e2e) system analyses for cooperative wireless networks employing a best-relay-selection method with imperfect or outdated channel state information, an infinite relay buffer size, and a wire-tap channel under dual correlated Rayleigh fading are given. The new findings, which are valid for any value of the combined signal-to-noise ratio, generalize existing findings in the literature. Closed-form expressions for probability density function, cumulative distribution function, moment generating function, outage probability under secrecy, and e2e system performance are given using one- and two-dimensional Laplace transform. Secrecy outage probability employing an adaptive encoder is also derived, which coherently links secrecy performance and e2e system performance under dual correlated Rayleigh fading for the first time. Effects of amount of fading on secrecy are discussed. Simulation results are shown to match theoretical predictions. Detailed discussions and insight are also given.
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