High spectrum utilization and low latency approach for multi-user-full-dimensional MIMO (MU-FD-MIMO) for 5G applications

Abstract

Ultra-Reliable Low-Latency Communications (URLLC) network acts a significant role of extending new radio connectivity and improves 5 G applications instantly without increasing a latency of MIMO wireless framework. It is very much indeed for maximizing spectral utility and retains desired energy efficiency of the URLLC network. Due to technology add-ups, still, it needs improvement in the spectral property as well as energy efficiency under multiple delay constraints. Therefore, in this paper, a new MIMO wireless framework is proposed that influence two unique strategies namely multi-users (MU) and full dimensional (FD) are combined to develop an efficient URLLC network, which is referred as MU-FD-MIMO system. Firstly, an effective beamforming is achieved by activating partial CSI-RS transmission at every eNB antenna. Secondly, estimate 3D response pattern of receiving antenna by modifying array size which extracts adaptability of channel properties. Thereby, a proper angle adjustment is carried between individual antenna element and UEs. As a result, improves beamforming coverage ability and ensure an optimistic thresholding function generated after estimates subcarrier spacing and 3D channel gain model. The experimental validation of the proposed MU-FD-MIMO system is subjected under different delay constraints includes (i) allow user up to tolerable limit, (ii) allow user with delay constrained respectively. It reaches an impressive service of maximum spectral utility, energy efficiency and low latency even under the delay-constrained scenarios.