Optimal Power Allocation for Artificial Noise Under Imperfect CSI Against Spatially Random Eavesdroppers
Optimal Power Allocation for Artificial Noise Under Imperfect CSI Against Spatially Random Eavesdroppers
In this correspondence, we study the secure multiantenna transmission with artificial noise (AN) under imperfect channel state information in the presence of spatially randomly distributed eavesdroppers. We derive the optimal solutions of the power allocation between the information signal and the AN for minimizing the secrecy outage probability (SOP) under …