Linear cooperation for spectrum sensing over correlated log-normal shadow fading channels

In this paper, we propose an advanced framework for linear cooperative spectrum sensing in cognitive radio networks over correlated log-normal shadow fading channels. Considering the realistic sensing and reporting channels which are not addressed in similar works, motivates us to propose a novel approximation for correlated log-normal sum. Furthermore, the linear cooperative spectrum sensing coefficients are computed based on the deflection criteria. This results in a framework with reasonable complexity which is suitable for practical applications. Simulation results show the excellent agreement between the exact and approximated statistics.