Results 11 to 20 of about 16,530 (258)

Broadband signal processing in communication systems [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1983
The broadband characteristics of the underwater acoustic propagation channel determine both the approach to communicating and the performance which can be achieved. This paper presents a detailed broadband characterization of the channel and uses this characterization to describe approaches to communication.
Stanley L. Adams, Michael H. Brill
openaire   +1 more source

Compact, Broadband, and Omnidirectional Antenna Array for Millimeter-Wave Communication Systems

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
In this paper, a millimeter-wave printed quadrupole antenna is proposed. It consists of two symmetric printed dipoles that make the quadrupole radiating power omnidirectionally.
Yuanzhi Liu, Mustapha C. E. Yagoub
doaj   +1 more source

MAC Protocol in Wireless Body Area Network for Mobile Health: A Survey and an Architecture Design

open access: yesInternational Journal of Distributed Sensor Networks, 2015
Wireless body area networks (WBANs) have become a leading solution in mobile health (mHealth). Typically, a WBAN consists of in-body or around-body sensor nodes for collecting data of physiological feature.
Xin Qi   +4 more
doaj   +1 more source

Active Pre-Equalizer for Broadband over Visible Light

open access: yesAdvances in Electrical and Electronic Engineering, 2017
This paper introduces a new technology called Broadband over Visible Light (BVL) which combines two technology solutions like Visible Light Communication(VLC) and Broadband over Power Line (BPL).
Tomas Stratil   +3 more
doaj   +1 more source

Adaptive Beam Splitting-Based Broadband Hybrid Precoding for Terahertz Massive MIMO

open access: yesSensors, 2023
Terahertz massive MIMO systems can be used in the local area network (LAN) scene of maritime communication and has great application prospects. To solve the problems of excessive beam training overhead in beam tracking and beam splitting in beam ...
Lei Xu   +4 more
doaj   +1 more source

5G is Real: Evaluating the Compliance of the 3GPP 5G New Radio System With the ITU IMT-2020 Requirements

open access: yesIEEE Access, 2020
The 3rd Generation Partnership Project (3GPP) submitted the 5G New Radio (NR) system specifications to International Telecommunication Union (ITU) as a candidate fifth generation (5G) mobile communication system (formally denoted as IMT-2020 systems). As
Samer Henry   +2 more
doaj   +1 more source

Radio-transparent dipole antenna based on a metasurface cloak

open access: yesNature Communications, 2022
The authors demonstrate broadband and efficient radio-transparent antennas based on cloaking technology. Their features are well suited for modern communication systems, as closely spaced antennas need to be integrated with minimal interference.
Jason Soric   +3 more
doaj   +1 more source

A concept of future sixth generation wireless networks: 6G [PDF]

open access: yesTehnika, 2021
Simultaneously with the beginning of the implementation of the fifth generation wireless networks (5G systems), the research of the next generation mobile wireless systems - the sixth generation network 6G, has began.
Urošević Uglješa D.   +1 more
doaj   +1 more source

Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train

open access: yesApplied Sciences, 2020
A vactrain (or vacuum tube high-speed flying train) is considered as a novel proposed rail transportation approach in the ultra-high-speed scenario. The maglev train can run with low mechanical friction, low air resistance, and low noise mode at a speed ...
Chencheng Qiu   +5 more
doaj   +1 more source

State Transition Graph-Based Spatial–Temporal Attention Network for Cell-Level Mobile Traffic Prediction

open access: yesSensors, 2023
Mobile traffic prediction enables the efficient utilization of network resources and enhances user experience. In this paper, we propose a state transition graph-based spatial–temporal attention network (STG-STAN) for cell-level mobile traffic prediction,
Jianrun Shi   +4 more
doaj   +1 more source

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