Artificial-Noise-Aided Secure Multicast Precoding for Directional Modulation Systems
Artificial-Noise-Aided Secure Multicast Precoding for Directional Modulation Systems
In a multicast scenario, all desired users are divided into K groups. Each group receives its own individual confidential message stream. Eavesdropper group aims to intercept K confidential message streams. To achieve a secure transmission, two secure schemes are proposed: Maximum group receive power plus null-space (NS) projection (Max-GRP plus …