Frequency Reuse of Beam Allocation for Multiuser Massive MIMO Systems

Abstract—Massive multiple-input-multiple-output (MIMO)

communication in fifth-generation (5G) mobile systems, thanks to

massive MIMO beamforming techniques, the fixed-beam scheme

paper, we focus on a fixed-beam based multiuser massive MIMO

maximize the sum data rate, a greedy beam allocation algorithm

radio frequency (RF) chains is smaller than the number of users.

achieves nearly optimal sum data rate. As only the sum data rate

from strong inter-beam interference and thus experience low

users while maintaining the sum data rate, an adaptive frequency

proposed adaptive frequency reuse strategy can greatly improve

served users without sacrificing the sum data rate.