Linear Secrecy Capacity Scaling in Dense Networks

We propose a new hierarchical cooperation technique using jamming in dense networks to achieve linear secrecy capacity scaling. To show the effect of the jamming signal in the proposed scheme, we derive the tolerable intensities of eavesdroppers to achieve the linear secrecy capacity scaling for hierarchical cooperation schemes with and without jamming, respectively. Although both hierarchical cooperation schemes can achieve the linear secrecy capacity scaling, only the proposed hierarchical cooperation scheme using jamming can achieve meaningful tolerable intensity of eavesdroppers.