Secrecy capacity region of a class of one-sided interference channel

Abstract

We derive an outer bound for the secrecy capacity region of a class of one-sided interference channel. The transmitters are assumed to be trustworthy while the message is secure against the non-intended receiver. The outer bound is applied to a deterministic channel in which the outer bound is showed to be tight, and to a Gaussian one-sided interference channel where a scheme is proposed that can come within one bit of the outer bound.