Results 31 to 40 of about 19,319,894 (254)

Preparation and Characterization of New Poly (Ether-Ester-Urethane) Membrane and Its Comprehensive Potential Evaluation for Natural Organic Matter Rejection from Water [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
In this study, the novel poly (ether-ester) urethane membranes, synthesized from poly(dioxanone) (PDO) and poly (ethylene glycol) (PEG) triblock copolymers, were introduced for the humic acid removal as a model of natural organic matter from aqueous ...
Mohammad Safdari   +3 more
doaj   +1 more source

Optically Feeding 1.75 W With 100 m MMF in Efficient C-RAN Front-Hauls With Sleep Modes

open access: yesJournal of Lightwave Technology, 2021
Using bundles of multimode optical fibers (MMF) as part of the 5G centralized radio access networks front-haul solutions for optically powering of low power consumption Remote Radio Heads (RRH) is proposed and experimentally demonstrated with 100 m of ...
J. L. López Cardona   +5 more
semanticscholar   +1 more source

Nephalai: towards LPWAN C-RAN with physical layer compression [PDF]

open access: yesACM/IEEE International Conference on Mobile Computing and Networking, 2020
We propose Nephelai, a Compressive Sensing-based Cloud Radio Access Network (C-RAN), to reduce the uplink bit rate of the physical layer (PHY) between the gateways and the cloud server for multi-channel LPWANs.
Jun Liu, Weitao Xu, Sanjay Jha, Wen Hu
semanticscholar   +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

Dynamically Energy-Efficient Resource Allocation in 5G CRAN Using Intelligence Algorithm

open access: yesEmitter: International Journal of Engineering Technology, 2022
5G network is the next generation for cellular networks to overcome the challenges and limitations of the 4G network.  Cloud Radio Access Network(C-RAN) is providing solutions for cost-efficient and power-efficient solutions for the 5G network.
Prasanth Rao Adiraju, Voore Subba Rao
doaj   +1 more source

Unsupervised Learning for C-RAN Power Control and Power Allocation

open access: yesIEEE Communications Letters, 2021
This letter applies a feedforward neural network trained in an unsupervised fashion to the problem of optimizing the transmit powers in centralized radio access networks operating on a cell-free basis. Both uplink and downlink are considered.
Rasoul Nikbakht   +2 more
semanticscholar   +1 more source

Joint Route Selection and Split Level Management for 5G C-RAN

open access: yesIEEE Transactions on Network and Service Management, 2021
This work tackles the problem faced by network/infrastructure providers of jointly selecting routing and functional split level to satisfy requests from virtual mobile network operators (vMNOs).
Cristian C. Erazo-Agredo   +5 more
semanticscholar   +1 more source

A View Synthesis-Based 360° VR Caching System Over MEC-Enabled C-RAN

open access: yesIEEE transactions on circuits and systems for video technology (Print), 2020
With the development of virtual reality (VR) technology, the future of VR systems is evolving from single-user wired connections to multi-user wireless connections.
Jianmei Dai   +3 more
semanticscholar   +1 more source

Optimizing Over-the-Air Computation in IRS-Aided C-RAN Systems [PDF]

open access: yesInternational Workshop on Signal Processing Advances in Wireless Communications, 2020
Over-the-air computation (AirComp) is an efficient solution to enable federated learning on wireless channels. Air- Comp assumes that the wireless channels from different devices can be controlled, e.g., via transmitter-side phase compensation, in order ...
Daesung Yu   +3 more
semanticscholar   +1 more source

An Efficient Rate-Splitting Multiple Access Scheme for the Downlink of C-RAN Systems [PDF]

open access: yesIEEE Wireless Communications Letters, 2019
This letter studies the optimization of rate-splitting multiple access (RSMA) transmission technique for a cloud radio access network (C-RAN) downlink system.
Daesung Yu, Junbeom Kim, Seok-Hwan Park
semanticscholar   +1 more source

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