Results 21 to 30 of about 1,129,195 (294)

Laboratory Radio and Community Communication initiatives

open access: yesRadiofonias – Revista de Estudos em Mídia Sonora, 2021
The research analyzes practices from the Community Communication Project (www.comcom.fac.unb.br), through the Community Communication Laboratory Radio (Ralacoco). Created in 2001, Ralacoco has had a history of community experiences with radio broadcast.
Fernando Oliveira Paulino   +2 more
openaire   +2 more sources

Formulation of professional morals’ criteria for national media based on islamic training and focused on Meraj alsa’da book [PDF]

open access: yesReligion & Communication, 2022
One of the most important side of Islam Religion is attracting human being toward morality. Religious moralistic media is the media not only be aware of all requirements for modern media but also using that element for propagating morals based on ...
Mohammad Ali Hormozizadeh   +2 more
doaj   +1 more source

Transoceanic radio communication [PDF]

open access: yesProceedings of the IEEE, 1919
The paper defines the state of the art of today which is the result of developments during the war. Transatlantic radio communication is at present maintained by five first class stations, two in America and three in Europe. These stations operate at wave-lengths between 12,500 and 17,000 meters.
openaire   +1 more source

Chirp-Based FHSS Receiver with Recursive Symbol Synchronization for Underwater Acoustic Communication

open access: yesSensors, 2018
In this paper, we propose a covert underwater acoustic communication method that is robust to fading using a chirp signal combined with a frequency-hopping spread spectrum scheme.
Geunhyeok Lee   +4 more
doaj   +1 more source

Radio-Communications Architectures

open access: yes, 2010
The goal of this chapter is to demonstrate the absolute need of matching the architecture design and the signal carrying the information. In section 1 and 2, considerations about current users' needs helped to identify three types of carrier signals in the context of radio-communications: NB-CW, WB-CW and IR.
Diet, Antoine   +3 more
openaire   +3 more sources

Reconfigurable wideband patch antenna for cognitive radio [PDF]

open access: yes, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, H.F.   +9 more
core   +2 more sources

Spectrum sharing security and attacks in CRNs: a review [PDF]

open access: yes, 2014
Cognitive Radio plays a major part in communication technology by resolving the shortage of the spectrum through usage of dynamic spectrum access and artificial intelligence characteristics.
Alhakami, Wajdi   +2 more
core   +3 more sources

RFSoC-FPGA Realization of a Code-Multiplexed Digital Receiver (CMDR) Using 1-ADC/Quad-Channel

open access: yesIEEE Journal of Microwaves
A 4-channel code-multiplexed digital receiver is presented for multiple-input-multiple-output (MIMO) applications targeting 5G millimeter-wave (mm-Wave) communications.
Kefayet Ullah   +2 more
doaj   +1 more source

Communication modality and attitude change in a realistic experiment [PDF]

open access: yes, 1989
In this experiment, an experimental interview with the leader of the Socialists in the Dutch Parliament was delivered via three different media: television, radio, or a newspaper presentation. We showed that the experimental interviews led, in themselves,
Wiegman, O.
core   +3 more sources

Communication Primitives in Cognitive Radio Networks

open access: yes, 2017
Cognitive radio networks are a new type of multi-channel wireless network in which different nodes can have access to different sets of channels. By providing multiple channels, they improve the efficiency and reliability of wireless communication ...
Gilbert, Seth   +2 more
core   +1 more source

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