Results 1 to 10 of about 11,289,245 (289)

Description of the TETRA 1 technology and standard for modern digital trunking systems of functional mobile radio communications [PDF]

open access: yesVojnotehnički Glasnik, 2021
Introduction/purpose: Since the end of 1995, when TETRA MoU promoted the new TETRA Standard within ETSI, tentatively called TETRA 1, it quickly began to be used, almost exclusively, for the construction of Functional UHF digital trunking systems for ...
Slađan M. Svrzić, Petar Jovanoski
doaj   +1 more source

Uporedni pregled standarda za digitalne tranking sisteme funkcionalnih mobilnih radio-veza / Comparative analysis of the standards for digital trunked mobile radio systems [PDF]

open access: yesVojnotehnički Glasnik, 2002
Za izgradnju funkcionalnih sistema mobilnih radio-veza danas se koriste tranking sistemi analognih i digitalnih mobilnih radio-veza. Zbog niza prednosti, tranking sistemi digitalnih mobilnih radio-veza sve vise potiskuju analogne tranking sisteme ...
Slađan Svrzić , Dragan Ćosović
doaj   +1 more source

A bias circuit for the thermal stability of GaAs HBT power amplifier

open access: yesElectronics Letters, 2021
This letter proposes a current bias circuit that improves the thermal stability of the 5G power amplifier (PA) in the GaAs HBT process. A diode and resistor scheme combined with a diode‐connected HBTs scheme are employed to generate temperature‐related ...
Yuanbo Ma   +3 more
doaj   +1 more source

An improved multiple manoeuver management protocol for platoon mobility in vehicular ad hoc networks

open access: yesIET Intelligent Transport Systems, 2021
Techniques in vehicular ad‐hoc networks have been utilised to reduce challenging issues such as pollution, accidents and traffic jams. The platoon management system (PMS) has shown promising results to solve the aforementioned problems.
Nigar Anjum Fida   +4 more
doaj   +1 more source

4 × 4 MIMO Fiber-Wireless System with RoF Transmission Capability [PDF]

open access: yesITM Web of Conferences, 2023
Transport networks, particularly fronthaul systems are facing substantial issues as a result of the expansion of radio access technologies (RATs) in 5G and beyond networks. Due to the difficulties and high expense of installing fiber links, a traditional
A U Athira, Zacharias Joseph
doaj   +1 more source

Spherical Coverage Characterization of 5G Millimeter Wave User Equipment With 3GPP Specifications

open access: yesIEEE Access, 2019
Millimeter-wave (mmWave) frequency bands are promising candidate spectrum for the fifth-generation (5G) mobile communication system, but it requires high directional antenna systems to be applied to the base station and the user equipment (UE) for ...
Kun Zhao   +6 more
doaj   +1 more source

Stackelberg game for heterogeneous traffics management in next‐generation cellular network

open access: yesIET Communications, 2021
The innovations in the internet of things and the advent of media‐intensive applications have massively increased the data burden on third‐ and fourth‐generation (wireless cellular technology) mobile networks.
Muhammad Asif   +4 more
doaj   +1 more source

Design of Emergency Position Reporting System for Disasters Using Amateur Radio and Automatic Packet Reporting System (APRS) as a Mobile Station Operator for Educational Purposes

open access: yesIndonesian Journal of Educational Research and Technology, 2023
The emergency position reporting system is proposed for disasters using amateur radio and Automatic Packet Reporting System (APRS) as mobile station operators for unexpected natural disasters after the Internet and mobile communication system ...
Sok Oeun Un   +5 more
doaj   +1 more source

Tetherless communications: the next step in the development of global personal communication network

open access: yesVojnotehnički Glasnik, 1999
Tetherless communications which include all kinds of mobile communication systems (wireless telephony, radio paging, cellular mobile and radio data systems) are considered.
Branislav M. Todorović   +1 more
doaj   +1 more source

Interference and noise analysis for hybrid FSO/RF-based 6G mobile backhaul

open access: yesETRI Journal, 2022
Optical wireless communication, or free space optics, is a promising solution for backhauls in sixth-generation mobile systems. However, the susceptibility of optical links to weather conditions has led to FSO links being furnished with radio frequency ...
Soyinka Nath   +2 more
doaj   +1 more source

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