Optimal Numbers of Base Station Antennas and Users in Multiuser Massive MIMO Systems with Pilot Overhead
다중 사용자 Massive MIMO 시스템의 파일럿 오버헤드를 고려한 최적 기지국 안테나 수 및 사용자 수 분석

Minchae Jung, Sooyong Choi
2016 The Journal of Korean Institute of Communications and Information Sciences  
In this paper, we consider multiuser massive multiple-input and multiple-output (MIMO) system where multiusers simultaneously utilize massive antennas of base station (BS). With a downlink frame structure considering pilot signals, we derive the ergodic cell capacity based on zero-forcing beamforming (ZFBF) technique. This paper proves that the ergodic cell capacity is concave function with respect to the numbers of BS antennas and users, and derives the optimum numbers of BS antennas and users
more » ... antennas and users maximizing ergodic cell capacity. From the simulation results, it is shown that the derived numbers of BS antennas and users has the optimum value for the maximum ergodic cell capacity, and the ergodic cell capacity with the derived optimum values increases with respect to the transmit SNR(Signal to Noise Ratio).
doi:10.7840/kics.2016.41.11.1630 fatcat:u4sb7n7io5bhboemusznxkv6vi