The next generation of mobile networks (5G) is expected to achieve high data rates, reduce
latency, as well as improve the spectral and energy efficiency of wireless communication …

In this paper, we investigate the selection problem of access points (APs) in cell-free
massive multiple-input multiple-output (MIMO) systems, where APs equipped with a large …

The reuse of the same pilot group across cells to address bandwidth limitations in a network
has resulted in pilot contamination. This causes severe inter-cell interference at the targeted …

Massive multiple-input multiple-output (MIMO) systems and pilot reuse are essential
ingredients for internet of things (IoT) networks and massive machine-type communications …

正交频分复用(OFDM, orthogonal frequency division multiplexing) 是物联网的物理层关键技术
之一, 导频设计和信道估计是OFDM 系统的关键问题. 针对物联网通信场景复杂多样导致固定导 …

In a massive multiple-input multiple-output (MIMO) system, the serious pilot contamination
problem severely restricts its ability to boost the spectrum utilization. To tackle this problem …

Massive multiple-input multiple-output (mMIMO) technology is a way to increase spectral
efficiency and provide access to the Internet of Things (IoT) and machine-type …

In this work, we investigate the power allocation needed to maximize the energy efficiency
(EE) of a massive multiple-input-multiple-output (MIMO) system. We first derive a closed …

With the advent of the 5G era, the number of user terminals has increased dramatically.
However, the limitation of pilot resources results in pilot reuse among user terminals, which …

In this paper, we consider pilot and data power allocation in multi-cell multi-user massive
multiple-input multiple-output (MIMO) systems to maximize the summation of spectral …