Hybrid Precoding for Multi-Group Physical Layer Multicasting

Abstract

Next generation of wireless networks will likely rely on large-scale antenna systems, either in the form of massive multi-input-multi-output (MIMO) or millimeter wave (mmWave) systems. Therefore, the conventional fully-digital precoders are not suitable for physical layer multicasting as they require a dedicated radio frequency chain per antenna element. In this paper, we show that in a multi-group multicasting system with an arbitrary number of transmit antennas, $G$ multicasting groups, and an arbitrary number of users in each group, one can achieve the performance of any fully-digital precoder with just $G$ radio frequency chains using the proposed hybrid multi-group multicasting structure.

arXiv comment5 pages, 5 figures, submitted to IEEE GLOBECOM 2017, Singapore, Dec. 2017

References in corpus (8)

• Spatially Sparse Precoding in Millimeter Wave MIMO Systems
• Hybrid Digital and Analog Beamforming Design for Large-Scale Antenna Arrays
• Low-Complexity Hybrid Precoding in Massive Multiuser MIMO Systems
• A Rate Splitting Strategy for Massive MIMO with Imperfect CSIT
• On the Number of RF Chains and Phase Shifters, and Scheduling Design with Hybrid Analog-Digital Beamforming
• Weighted Fair Multicast Multigroup Beamforming under Per-antenna Power Constraints
• Massive MIMO Multicasting in Noncooperative Cellular Networks
• Hybrid Precoding for Physical Layer Multicasting