Computationally Tractable Model of Energy Detection Performance Over Slow Fading Channels

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Executive Summary

Energy Detection (ED) has been widely used for detecting unknown deterministic signals in many wireless communication applications, e.g., cognitive radio, and Ultra-WideBand (UWB). However, the performance analysis of ED over slow fading channels is cumbersome, because it is difficult to derive closed-form expressions for the average probability of detection involving the generalised Marcum Q-function and the log-normal distribution. In this paper, the authors derive an approximation of the average probability of detection over a slow fading channel by replacing the log-normal distribution with a Wald distribution.

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