Survey of large-scale MIMO systems

K Zheng, L Zhao, J Mei, B Shao… - … Surveys & Tutorials, 2015 - ieeexplore.ieee.org
The escalating teletraffic growth imposed by the proliferation of smartphones and tablet
computers outstrips the capacity increase of wireless communications networks …

Exploring the vertical dimension of dynamic beam steering

S Saur, H Halbauer - 2011 8th International Workshop on Multi …, 2011 - ieeexplore.ieee.org
This paper investigates the properties of a cellular mobile radio system with the capability to
dynamically adapt the downtilt at the base station on a per terminal basis. We compare …

Interference coordination with vertical beamforming in 3D MIMO-OFDMA networks

W Zhang, Y Wang, F Peng… - IEEE Communications …, 2013 - ieeexplore.ieee.org
This paper investigates interference coordination for 3-dimension (3D) antenna array
systems in multicell multiple-input multiple-output (MIMO) and orthogonal frequency division …

A 3D beamforming analytical model for 5G wireless networks

JM Kelif, M Coupechoux… - 2016 14th International …, 2016 - ieeexplore.ieee.org
This paper proposes an analytical study of 3D beamforming for 5G wireless networks. In a
first step, we develop a three dimensional analytical beamforming model for wireless …

Capacity and coverage self-optimization method and device in a mobile network

H Zhuang, J Zhang, LUO Zezhou - US Patent 8,712,332, 2014 - Google Patents
The present invention discloses an adaptive cell coverage and capacity optimization method
and device in a mobile communication network, aiming to improve adaptive optimization …

Optimization of downtilts adjustment combining joint transmission and 3D beamforming in 3D MIMO

Z Wei, Y Wang, W Lin - 2014 IEEE/CIC International …, 2014 - ieeexplore.ieee.org
This paper mainly proposes a downtilts adjustment scheme combining joint transmission
(JT) and 3-dimension (3D) beamforming in 3D multiple-input multiple-output (MIMO) …

[PDF][PDF] 一种新颖的3D 有源天线基站组网波束下倾角选择方法

王凯, 张亮, 谭国平 - 电信科学, 2015 - infocomm-journal.com
传统二维有源天线仅能进行水平维波束调整, 而三维有源天线能进行垂直维波束调整,
提升系统吞吐量. 现有的三维有源天线波束下倾角选择方法是基于俯仰角信息进行选择的 …

Joint optimization for cell association and vertical downtilts adjustment in 3D MIMO enabled HetNets

D Li, J Xu, X Wang, X Tao - 2018 IEEE Wireless …, 2018 - ieeexplore.ieee.org
This paper addresses the cell association issue in the downlink of 3-dimension (3D) multiple
input multiple output (MIMO) enabled heterogeneous networks (HetNets). In order to serve …

Interference coordination in 3D MIMO-OFDMA networks

Y Wang, W Zhang, P Li, P Zhang - IEICE Transactions on …, 2014 - search.ieice.org
This paper investigates interference coordination for 3-dimension (3D) antenna array
systems in multicell multiple-input multiple-output (MIMO) and orthogonal frequency division …

Multicell propagation in a realistic macro cellular environment

M Grieger, GP Fettweis… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
The architecture of cellular systems is currently revolutionized in order to remove the
capacity limitation that is enforced by intercell interference. Instead of considering signals …