and an outer bound on the secrecy capacity region, and second, prove that these bounds meet for a class of less noisy eavesdropping channels. Third, an inner bound on the secrecy capacity region of the Gaussian version of CMAC-CM known as GCMAC-CM is obtained...

secrecy constraints. Our work consists of four parts.

(i) First, we consider the discrete memoryless (DM-MAC-WT) case of the model and derive inner and outer bounds on the secrecy capacity region under both of the secrecy constraints...

Abstract—The two-user discrete memoryless cognitive

multiple-access channel with confidential messages (DM-CMACCM)

has been studied in the literature with a result for the

secrecy capacity region. In this paper, we study a more...