Secrecy Capacity Outer Bound of Broadcast Channels with States Known at the Transmitter and Message Side Information at Receivers

摘要

In this article, a broadcast channel in the degraded state with two legitimate receivers in the attendance of an eavesdropper has been studied, where, the sender demands to forward two independent confidential messages that ought to be kept as secret as feasible of the eavesdropper to the legitimate receivers. In the studied system, it has been supposed that the non-causal channel state information has been considered at the transmitter side and every one of receivers has the message forwarded via source demanded via the further one. The model studied in this paper is further generalized into the formerly considered broadcast channel with confidential messages and considering side information in the receiver. It has been supplied an outer bound by considering confidentially conditions for proposed system.