Confidential Cooperative Communication With Trust Degree of Potential Eavesdroppers.

For a confidential communication, we develop the transmission strategies by taking into account trust degree among users, which shows how much a user can be trusted in terms of an eavesdropping attack. For a single potential eavesdropper (PE) case, we derive an optimal power allocation for confidential message and jamming signal to maximize an expected secrecy rate with respect to the trust degree...