Results 21 to 30 of about 807,233 (265)

Research on Penetration Loss of D-Band Millimeter Wave for Typical Materials

open access: yesSensors, 2022
The millimeter-wave frequency band provides abundant frequency resources for the development of beyond 5th generation mobile network (B5G) mobile communication, and its relative bandwidth of 1% can provide a gigabit-level communication bandwidth.
Xinyi Wang   +5 more
doaj   +1 more source

Models for gramicidin channels

open access: yesBiophysical Journal, 1992
To the Editor: In several recent papers, NMR results for gramicidin A have been compared with predictions based on various models for a right-handed channel. In particular, 2H quadrupolar splittings (Hing et al., 1990a,b; Prosser et al., 1991) or '5N chemical shifts (Chiu et al., 1991) from solid-state NMR spectra of labeled gramicidin A in oriented ...
Koeppe, R.E.   +2 more
openaire   +2 more sources

A Long Distance Underwater Visible Light Communication System With Single Photon Avalanche Diode

open access: yesIEEE Photonics Journal, 2016
Underwater visible light communication (UVLC) is of great interest to the military, industry, and the scientific community. In this paper, a long-distance UVLC system is designed, where the half power angle of light-emitting diode (LED) is narrowed to ...
Chao Wang, Hong-Yi Yu, Yi-Jun Zhu
doaj   +1 more source

Cascaded PLC-VLC Channel: An Indoor Measurements Campaign

open access: yesIEEE Access, 2018
Recently, power-line communication (PLC) technology has been associated with the emerging visible light communication (VLC) technology. PLC technology is matured and has gained from tremendous research contributions over the past years.
Stephane M. Nlom   +2 more
doaj   +1 more source

A Model for Adversarial Wiretap Channels

open access: yesIEEE Transactions on Information Theory, 2016
In wiretap model of secure communication the goal is to provide (asymptotic) perfect secrecy and reliable communication over a noisy channel that is eavesdropped by an adversary with unlimited computational power. This goal is achieved by taking advantage of the channel noise and without requiring a shared key.
Pengwei Wang 0006, Reihaneh Safavi-Naini
openaire   +2 more sources

A Simulation Framework for Multiple-Antenna Terminals in 5G Massive MIMO Systems

open access: yesIEEE Access, 2017
The recent interest in massive multiple in multiple out (MIMO) has spurred intensive work on massive MIMO channel modeling in the contemporary literature. However, current models fail to take the characteristics of terminal antennas into account.
Erik L. Bengtsson   +5 more
doaj   +1 more source

The Retrieval and Effect of Core Parameters for Near-Field Inter-Body Coupling Communication

open access: yesSensors, 2023
The potential of the Internet of Body (IoB) to support healthcare systems in the future lies in its ability to enable proactive wellness screening through the early detection and prevention of diseases.
Xu Zhang   +7 more
doaj   +1 more source

Channel Measurement and Resource Allocation Scheme for Dual-Band Airborne Access Networks

open access: yesIEEE Access, 2019
The aerial base stations (ABSs) can be quickly deployed to provide emergency communications and airborne network infrastructures. How to ensure wide coverage, reliable links, and high throughput for ground users under the conditions of limited onboard ...
Ruonan Zhang   +5 more
doaj   +1 more source

Node Density Estimation in VANETs Using Received Signal Power [PDF]

open access: yesRadioengineering, 2015
Accurately estimating node density in Vehicular Ad hoc Networks, VANETs, is a challenging and crucial task. Various approaches exist, yet none takes advantage of physical layer parameters in a distributed fashion.
G. Khomami   +2 more
doaj  

Mechanism of interchange between the reflections in a channel of communications with the power spectral density

open access: yesIngeniería e Investigación, 2017
The theoretical limit given by the Shannon Capacity equation has been the origin of communications systems based on the interchange between bandwidth and power.
José Roberto Cárdenas
doaj   +1 more source

Home - About - Disclaimer - Privacy