Results 31 to 40 of about 2,875,016 (292)

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

IEEE 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, Qi Guo, Daosen Zhai, Deyun Zhou, Xiaojiang Du, Mohsen Guizani   +5 more
doaj   +1 more source

Statistical channel model for 6G communication networks in Banda Aceh City

Радіоелектронні і комп'ютерні системи, 2023
Wireless technology is expected to undergo considerable transformation because of the numerous services offered by 6G communication networks, which virtually entirely encompass every part of everyday life and use a variety of devices. Channel modeling is
Hubbul Walidainy, Nawal Nashirah, Ramzi Adriman, Yuwaldi Away, Nasaruddin Nasaruddin   +4 more
doaj   +1 more source

Memory effects in attenuation and amplification quantum processes

, 2010
With increasing communication rates via quantum channels, memory effects become unavoidable whenever the use rate of the channel is comparable to the typical relaxation time of the channel environment.
A. S. Holevo, Cosmo Lupo, M. Hayashi, R. G. Gallager, R. M. Gray, Stefano Mancini, Vittorio Giovannetti   +6 more
core   +1 more source

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

Ingeniería 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

Analysis of the Underwater Wireless Optical Communication Channel Based on a Comprehensive Multiparameter Model

Applied Sciences, 2021
A comprehensive multiparameter model is proposed for underwater wireless optical communication (UWOC) channels to integrate the effects of absorption, scattering, and dynamic turbulence.
Rujun Cai, Ming Zhang, Daoxin Dai, Yaocheng Shi, Shiming Gao   +4 more
doaj   +1 more source

Theory of One-Channel vs. Multi-Channel Kondo Effects for Ce$^{3+}$ Impurities

, 1995
We introduce a model for Ce$^{3+}$ impurities in cubic metals which exhibits competition between the Fermi-liquid fixed point of the single channel Kondo model and the non-Fermi-liquid fixed point of the two- and three-channel Kondo models. Using the non-
A. W. W. Ludwig, A. Zawadowski, B. Andraka, C. L. Seaman, D. C. Ralph, D. Jaccard, D. L. Cox, D. L. Cox, D. L. Cox, D. L. Cox, H. Amitsuka, I. Affleck, J. F. Herbst, J. R. Schrieffer, J. W. Allen, J.-S. Kang, M. B. Maple, N. E. Bickers, N. E. Bickers, N. Grewe, P. D. Sacramento, P. Nozières, Tae-Suk Kim, W. W. Kim   +23 more
core   +2 more sources

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada, Makoto Harada, Tadahiko Kikugawa, Takeshi Nakata, Koji Hashimoto, Tsuneo Konta, Yuji Kamijo   +6 more
wiley   +1 more source

Channel Hardening in Massive MIMO: Model Parameters and Experimental Assessment

IEEE Open Journal of the Communications Society, 2020
Reliability is becoming increasingly important for many applications envisioned for future wireless systems. A technology that could improve reliability in these systems is massive MIMO (Multiple-Input Multiple-Output).
Sara Willhammar, Jose Flordelis, Liesbet Van Der Perre, Fredrik Tufvesson   +3 more
doaj   +1 more source

Short channel effects in graphene-based field effect transistors targeting radio-frequency applications [PDF]

, 2016
Channel length scaling in graphene field effect transistors (GFETs) is key in the pursuit of higher performance in radio frequency electronics for both rigid and flexible substrates.
Cartoixà, Xavier, Feijoo, Pedro C., Jiménez, David   +2 more
core   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source