Resource Allocation with Cooperative Jamming in Socially Interactive Secure D2D Underlay

This work studies secrecy enhancement for socially enabled communications in cellular device-to-device (D2D) underlay through resource allocation. By analyzing the impact of social characteristics of those involved D2D users (DUs), proper selection of transmitters and friendly jammer nodes with appropriate power and spectrum allocation can facilitate secrecy transmission. First, we select D2D transmitter by characterizing the link to guarantee the desired success rate without downgrading the service requirement for impacted cellular users (CUs). Furthermore, jammers' trustiness based on their own social interaction is considered for secrecy enhancement. Numerical results verify the performance of our proposed scheme.