Results 211 to 220 of about 14,713 (263)

Induced Voltage on a Communication Cable Caused by Incoming Radio Waves

Electronics and Communications in Japan (Part I: Communications), 2002
AbstractWith a view to estimating the induced voltage generated in a communication cable by incoming radio waves, this paper carries out an analysis specifically for the common mode and compares the results with the measured values. In the theoretical analysis, communication cables installed in an urban area are considered.
Masaru Nobesawa, Kosei Tamaki, Nozomu Hasebe, Itsuro Yokoyama   +3 more
openaire   +1 more source

Demo Abstract: "See the Radio Waves" via VR and Its Application in Wireless Communications

IEEE INFOCOM 2021 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2021
The radio wave is the carrier that transmits information in wireless communications. It propagates across space through a complex and dynamic mechanism. However, the radio waves are invisible, which makes it hard to design wireless communication systems.
Pan Tang, Jianhua Zhang 0001, Yuxiang Zhang 0002, Yicheng Guan, Pan Qi, Fangyu Wang, Li Yu, Ping Zhang 0003   +7 more
openaire   +2 more sources

History of Communications/Radio Wave Propagation from Marconi to MIMO

IEEE Communications Magazine, 2017
Radio waves from a few kilohertz to millimeter-wave frequencies play a key role in modern wireless communications. The development over the last 120 years is traced with an emphasis on communication aspects and physical phenomena rather than theory. The early years were characterized by experiments with no theory and lack of knowledge of ionospheric ...
openaire   +2 more sources

Radio waves, children’s rights and community communication: A radio for children’s rights project in Africa

Journal of African Media Studies, 2019
This article draws upon research done as part of a formative evaluation of a radio project on children’s rights in Tanzania. Fieldwork was conducted etween January and June 2016 followed by a longer period of analysis. In this article we take the project as a case study of applied Communication for Development (ComDev) and examine the insights it ...
Vicensia Shule, Hugo Boothby, Samah Ahmed, Anders Høg Hansen   +3 more
openaire   +1 more source

MM radio-wave generators of stochastic oscillations for the hidden communications system

3rd International Conference on Satellite Communications (IEEE Cat. No.98TH8392), 2002
Systems of radiocommunications for sending complex noise signals have many serious advantages. In this work the principal attention was given to methods of SO excitation both on volumetric and on surface waves in systems with wear and strong resonance based on BWT and a generator with surface wave resonator (SWR).
B. Yefimov, F. Kivva, M. Milcho, V. Rakityansky   +3 more
openaire   +1 more source

PROTECTION AGAINST THE ELECTROMAGNETIC STRENGTH OF THE RADIO WAVES IN COMMUNICATION RADIO NETWORKS

Journal Scientific and Applied Research, 2023
In this paper presents protection methods against Electromagnetic straight of the radio waves in communication radio networks. Examples of personal protective equipment for monitoring EMF when working near transmitting devices. Personal Monitor. When an electric current flows through the human body, cells and tissues prevent the movement of charged ...
openaire   +1 more source

Performance Evaluation for Maritime Data Communication - LF band Radio Wave

Marine Navigation, 2017
The latest maritime data communication system consists of satellite-based and grand-based system. The former uses micro wave for off shore communication or broadcasting, and the latter uses VHF or LF band radio wave for coastal communication or broadcasting.
S. Okuda, M. Toba, Y. Arai
openaire   +1 more source

Plasmonics: Communication by radio waves as found in Elasmobranchii and Teleostii fishes

Hydrobiologia, 1972
The phenomenon of fish communication, via hydronic radio waves, is both perplexing and important to the biologist. It has been found through my research that fish definitely possess the ability to produce hydronic radio waves. Hydronic signals are neither sonic nor electrical, but are receivable on a submerged dipole antenna. No signals are received in
openaire   +1 more source

Analysis of radio wave propagation at millimeter-wave band in tunnels for 5G communications

2016 22nd International Conference on Applied Electromagnetics and Communications (ICECOM), 2016
In this paper, the simulation and measurement results at millimeter-wave frequency inside three different tunnels are presented. Through the simulation results the impacts of tunnel cross sectional shape and dimension on path loss and delay spread are analyzed.
Andrej Hrovat, Tomaz Javornik, Ke Guan
openaire   +1 more source

Polarization of Ionospherically Propagated HF Radio Waves with Applications to Radio Communication

Radio Science, 1969
Sweep‐frequency CW radio signals transmitted over 1300‐km north‐south and 1900‐km east‐west temperate‐zone paths were received 24 hours per day for 21½ ‐day periods. Measurements of the incoming one‐hop F‐layer polarization, as a function of time‐of‐day and radio frequency, indicate that daytime rates of change of polarization rotation with frequency ...
openaire   +1 more source