Base-Station Antenna Arrays in Mobile Communications

1996 ◽  
pp. 447-454
Author(s):  
Björn Ottersten ◽  
Per Zetterberg
Keyword(s):  
Mobile Communications ◽  
Antenna Arrays ◽  
Base Station

Miniaturisation of antenna arrays for mobile communications

2005 ◽  
Author(s):  
J. Weber ◽  
Ch. Volmer ◽  
K. Blau ◽  
R. Stephan ◽  
M.A. Hein
Keyword(s):  
Mobile Communications ◽  
Antenna Arrays

HYGIENIC ASSESSMENT OF ELECTROMAGNETIC RADIATION LEVELS OF BASE STATIONS,INSTALLED ON THE ROOFS OF BUILDINGS AND THE TERRITORY OF LAND PLOTS IN TASHKENT

2021 ◽  
Vol 2 (5) ◽  
pp. 5-11
Author(s):  
G. A. Tashpulatova ◽  
◽  
A. N. Krasavin
Keyword(s):  
Public Health ◽  
Electromagnetic Radiation ◽  
Flux Density ◽  
Energy Flux ◽  
Mobile Communications ◽  
Base Station ◽  
Base Stations ◽  
Cellular Communications ◽  
Measurement Results ◽  
Energy Flux Density

This article is about instrumental measurements of the FR EMR energy flux density. The measurement results were analyzed with the division of the data obtained by the purpose of buildings and the height of the antenna equipment placement, a hygienic assessment of the RF EMR levels created by the equipment of base stations of cellular communications, installed on the roofs of residential and public buildings and adjacent territories of Tashkent is given. A proposal is made on the rational placement of radio engineering facilities.Keywords:electromagnetic field; electromagnetic safety; base station for mobile communications; protection of public health; sanitary supervision

A vector channel modeling and adaptive beamforming for multipath propagation using base-station antenna arrays

2002 ◽  
Author(s):  
Suk Chan Kim ◽  
Taejoo Chang ◽  
Seong Ill Park ◽  
Iickho Song ◽  
Min Sou Lee ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Multipath Propagation ◽  
Channel Modeling ◽  
Adaptive Beamforming ◽  
Base Station ◽  
Vector Channel

scholarly journals Suppression of Cross-Band Scattering in Interleaved Dual-Band Cellular Base-Station Antenna Arrays

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 222486-222495
Author(s):  
Hai-Han Sun ◽  
Bevan Jones ◽  
Y. Jay Guo ◽  
Yee Hui Lee
Keyword(s):  
Antenna Arrays ◽  
Base Station ◽  
Dual Band

scholarly journals Beamforming Optimization in Internet of Things Applications Using Robust Swarm Algorithm in Conjunction with Connectable and Collaborative Sensors

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2048 ◽  
Author(s):  
Mohammed Zaki Hasan ◽  
Hussain Al-Rizzo
Keyword(s):  
Internet Of Things ◽  
Antenna Arrays ◽  
Smart Grids ◽  
Network Connectivity ◽  
Base Station ◽  
Node Selection ◽  
Swarm Optimization ◽  
Selection Scheme ◽  
Multihop Relaying ◽  
The Internet Of Things

The integration of the Internet of Things (IoT) with Wireless Sensor Networks (WSNs) typically involves multihop relaying combined with sophisticated signal processing to serve as an information provider for several applications such as smart grids, industrial, and search-and-rescue operations. These applications entail deploying many sensors in environments that are often random which motivated the study of beamforming using random geometric topologies. This paper introduces a new algorithm for the synthesis of several geometries of Collaborative Beamforming (CB) of virtual sensor antenna arrays with maximum mainlobe and minimum sidelobe levels (SLL) as well as null control using Canonical Swarm Optimization (CPSO) algorithm. The optimal beampattern is achieved by optimizing the current excitation weights for uniform and non-uniform interelement spacings based on the network connectivity of the virtual antenna arrays using a node selection scheme. As compared to conventional beamforming, convex optimization, Genetic Algorithm (GA), and Particle Swarm Optimization (PSO), the proposed CPSO achieves significant reduction in SLL, control of nulls, and increased gain in mainlobe directed towards the desired base station when the node selection technique is implemented with CB.

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