This paper aims to investigate the benefit of using intelligent reflecting surface (IRS) in multi-user multiple-input single-output (MU-MISO) systems, presence eavesdroppers. We maximize weighted sum secrecy rate by jointly designing secure beamforming (BF), artificial noise (AN), as well phase shift IRS. An alternating optimization (AO) method is proposed deal with formulated non convex proble...

We establish a maximal moment inequality for the weighted sum of a sequence of random variables with finite second moments. An extension to Hájek-Rény and Chow’s type inequality is then obtained. When certain second-moment properties are fulfilled, it enables us to deduce a strong law for the weighted sum of a time series having longrange dependence. Applications to estimation and model selecti...