Radio frequency exposure and safety associated with base stations used for personal wireless telecommunication

2002 ◽  
Vol 44 (1) ◽  
pp. 180-183 ◽  
Author(s):  
J.C. Lin
Keyword(s):  
Radio Frequency ◽  
Base Stations ◽  
Wireless Telecommunication

scholarly journals Temporal variation of exposure from radio-frequency electromagnetic fields around mobile communication base stations

2021 ◽  
Vol 12 ◽  
pp. e00724
Author(s):  
Abel B. Olorunsola ◽  
Omolayo M. Ikumapayi ◽  
Bankole I. Oladapo ◽  
Adeleke O. Alimi ◽  
Adeyinka O.M. Adeoye
Keyword(s):  
Radio Frequency ◽  
Temporal Variation ◽  
Electromagnetic Fields ◽  
Mobile Communication ◽  
Base Stations

Political Context Elements in Public Policy of Radio Frequency Information Technology and Electromagnetic Fields

2019 ◽  
pp. 346-364
Author(s):  
Joshua M. Steinfeld
Keyword(s):  
Public Policy ◽  
Information Technology ◽  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Human Subjects ◽  
Base Stations ◽  
The Public ◽  
Frequency Information ◽  
Base Site ◽  
Political Narratives

There are widespread uses of radio frequency information technology (RADFIT) including applications related to communications, security, big data, military, transportation, space exploration, oceanography, agriculture, medical sciences, and more. Regulation of RADFIT is challenging and controversial as agencies and stakeholders struggle to balance benefits and costs. This powerful and invisible technology has the capacity to achieve breakthrough solutions by utilizing electromagnetic fields to collect, analyze, and transmit data, or to enact stimuli to create interventions for machines or living matter. However, the prevalence of RF base stations and electromagnetic fields has altered the environment and results in unintended absorption by human subjects. The public policy and politics of RADFIT, including the processes for base site installation and acceptable levels of absorption, have come to the forefront of discourse. This chapter discusses the political narratives that dictate public policy stances on the issue, bureaucratic considerations, and the response by communities.

The Adverse Effect of Electromagnetic Radiation From Cellular Base Stations in Nigeria

2021 ◽  
pp. 269-280
Author(s):  
Ndidi Stella Arinze ◽  
Patrick Uche Okafor ◽  
Osondu Ignatius Onah
Keyword(s):  
Field Strength ◽  
Radio Frequency ◽  
Electromagnetic Radiation ◽  
Mobile Phones ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Base Stations ◽  
Telecommunication Industry ◽  
Specific Absorption ◽  
The People

On a global scale, the telecommunication industry is experiencing tremendous growth in mobile phones. Mobile phones communicate with base stations that are erected by the telecommunication industry. The base station produces radio frequency and exposes the people near the base stations to radiation. The effect of electromagnetic radiation from four base stations located at the residential area was studied by measuring their electric field strength and calculating their magnetic field strength and power density at different distances covering a frequency range of 900MHz to 2100MHz. The obtained values showed that the four cellular base stations are operating above the standard values of the International Commission on Non-Ionizing Radiation Protection Electromagnetic Field Radiation. The specific absorption rate was measured to determine the amount of radio frequency electromagnetic radiation absorbed by the human body. The result which is in the range of 3.22-3.70 W/kg is higher than the acceptable 2 W/kg for localized specific absorption rate.

scholarly journals A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1101
Author(s):  
Felipe A. P. de Figueiredo ◽  
Ruben Mennes ◽  
Irfan Jabandžić ◽  
Xianjun Jiao ◽  
Ingrid Moerman
Keyword(s):  
Radio Frequency ◽  
Mobile Networks ◽  
Spectral Efficiency ◽  
Base Stations ◽  
Traffic Load ◽  
Front End ◽  
Rf Front End ◽  
Radio Access ◽  
Wireless Spectrum ◽  
Arbitrary Frequency

The next generation of wireless and mobile networks will have to handle a significant increase in traffic load compared to the current ones. This situation calls for novel ways to increase the spectral efficiency. Therefore, in this paper, we propose a wireless spectrum hypervisor architecture that abstracts a radio frequency (RF) front-end into a configurable number of virtual RF front ends. The proposed architecture has the ability to enable flexible spectrum access in existing wireless and mobile networks, which is a challenging task due to the limited spectrum programmability, i.e., the capability a system has to change the spectral properties of a given signal to fit an arbitrary frequency allocation. The proposed architecture is a non-intrusive and highly optimized wireless hypervisor that multiplexes the signals of several different and concurrent multi-carrier-based radio access technologies with numerologies that are multiple integers of one another, which are also referred in our work as radio access technologies with correlated numerology. For example, the proposed architecture can multiplex the signals of several Wi-Fi access points, several LTE base stations, several WiMAX base stations, etc. As it able to multiplex the signals of radio access technologies with correlated numerology, it can, for instance, multiplex the signals of LTE, 5G-NR and NB-IoT base stations. It abstracts a radio frequency front-end into a configurable number of virtual RF front ends, making it possible for such different technologies to share the same RF front-end and consequently reduce the costs and increasing the spectral efficiency by employing densification, once several networks share the same infrastructure or by dynamically accessing free chunks of spectrum. Therefore, the main goal of the proposed approach is to improve spectral efficiency by efficiently using vacant gaps in congested spectrum bandwidths or adopting network densification through infrastructure sharing. We demonstrate mathematically how our proposed approach works and present several simulation results proving its functionality and efficiency. Additionally, we designed and implemented an open-source and free proof of concept prototype of the proposed architecture, which can be used by researchers and developers to run experiments or extend the concept to other applications. We present several experimental results used to validate the proposed prototype. We demonstrate that the prototype can easily handle up to 12 concurrent physical layers.

Bounded-hop percolation and wireless communication

2016 ◽  
Vol 53 (3) ◽  
pp. 833-845 ◽  
Author(s):  
Christian Hirsch
Keyword(s):  
Point Process ◽  
Poisson Point Process ◽  
Base Station ◽  
Telecommunication Networks ◽  
Base Stations ◽  
Continuum Percolation ◽  
Supercritical Regime ◽  
Close Relationship ◽  
Wireless Telecommunication ◽  
Minimum Number

AbstractMotivated by an application in wireless telecommunication networks, we consider a two-type continuum-percolation problem involving a homogeneous Poisson point process of users and a stationary and ergodic point process of base stations. Starting from a randomly chosen point of the Poisson point process, we investigate the distribution of the minimum number of hops that are needed to reach some point of the base station process. In the supercritical regime of continuum percolation, we use the close relationship between Euclidean and chemical distance to identify the distributional limit of the rescaled minimum number of hops that are needed to connect a typical Poisson point to a point of the base station process as its intensity tends to 0. In particular, we obtain an explicit expression for the asymptotic probability that a typical Poisson point connects to a point of the base station process in a given number of hops.

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