Massive OAM‐MIMO transmission scheme for 5G networks and beyond

Abstract

Abstract The combination of orbital angular momentum (OAM) and massive multiple‐input multiple‐output (MIMO) brings the possibility of almost infinite transmission capability, which may be applied in the coming 5th generation networks and beyond. In this study, a uniform line array (ULA)‐based massive OAM‐MIMO scheme in a multipath scene is presented. The cumulative phase of OAM carriers and multiple reference coordinate systems relative to each transmitting antenna are used to describe the OAM‐MIMO wireless channel model theoretically. The performance indices of interest including capacity, energy efficiency, and capacity gain are numerically investigated in detail. The results indicate that the presented ULA‐based massive OAM‐MIMO scheme performs better overall than a conventional MIMO scheme via enhancing the OAM multiplexing intensity, and multi‐fold capacity gain can be obtained especially in the low signal‐to‐noise rate communications.

Keywords

• Antenna arrays
• Communication switching
• Mobile radio systems
• Telecommunication systems (energy utilisation)