Results 31 to 40 of about 1,256,284 (285)

Numerical investigation of graphene derivatives as HTL in PBDB-T:NCBDT bulk heterojunction organic solar cell

open access: yesResults in Optics
The damaging effects of the most widely used PEDOT:PSS have led researchers to search for an alternative hole transport layer (HTL) in non-fullerene acceptor (NFA) based bulk heterojunction organic solar cells (BHJOSC’s).
Denet Davis, K.S. Sudheer
doaj   +1 more source

Artificial Intelligence Assisted Enhanced Energy Efficient Model for Device-to-Device Communication in 5G Networks

open access: yesHuman-Centric Intelligent Systems, 2023
Device-to-device (D2D) communications promise spectral and energy efficiency, total system capacity, and excellent data rates. These improvements in network performance led to much D2D research, but it revealed significant difficulties before their full ...
Shailendra Mishra
doaj   +1 more source

Assisting V2V failure recovery using Device-to-Device Communications

open access: yes, 2015
This paper aims to propose a new solution for failure recovery (dead-ends) in Vehicle to Vehicle (V2V) communications through LTE-assisted Device-to-Device communications (D2D).
Abd-Elrahman, Emad   +4 more
core   +1 more source

Network-Assisted Device-to-Device (D2D) Direct Proximity Discovery with Underlay Communication [PDF]

open access: yes, 2015
Device-to-Device communications are expected to play an important role in current and future cellular generations, by increasing the spatial reuse of spectrum resources and enabling lower latency communication links.
Popovski, Petar, Pratas, Nuno K.
core   +2 more sources

Spectrum Sharing for Device-to-Device Communication in Cellular Networks

open access: yes, 2014
This paper addresses two fundamental and interrelated issues in device-to-device (D2D) enhanced cellular networks. The first issue is how D2D users should access spectrum, and we consider two choices: overlay (orthogonal spectrum between D2D and cellular
Andrews, Jeffrey G.   +2 more
core   +1 more source

On ASER Analysis of Energy Efficient Modulation Schemes for a Device-to-Device MIMO Relay Network

open access: yesIEEE Access, 2020
In this paper, we investigate the performance of a device-to-device (D2D) multiple-input and multiple-output (MIMO) communications using an amplify-and-forward relaying for various energy-efficient modulation schemes.
Shaik Parvez   +2 more
doaj   +1 more source

Interference-aware distributed device-to-device caching

open access: yes2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2017
In this paper, cache placement problem in cellular networks with device to device communications (D2D) is addressed. D2D transmission allows cellular bandwidth reuse which necessitates interference management. We propose a distributed algorithm, where the base station rewards the user terminals for caching content and helping other nearby terminals ...
Kazez, Ahmet Cihat, Girici, Tolga
openaire   +2 more sources

Energy-Efficient Resource Allocation for Device-to-Device Underlay Communication

open access: yes, 2014
Device-to-device (D2D) communication underlaying cellular networks is expected to bring significant benefits for utilizing resources, improving user throughput and extending battery life of user equipments.
Han, Zhu   +3 more
core   +1 more source

Unmanned Aerial Vehicle with Underlaid Device-to-Device Communications: Performance and Tradeoffs [PDF]

open access: yes, 2016
In this paper, the deployment of an unmanned aerial vehicle (UAV) as a flying base station used to provide on the fly wireless communications to a given geographical area is analyzed.
Bennis, Mehdi   +3 more
core   +4 more sources

Active/robotic capsule endoscopy - A review

open access: yesAlexandria Engineering Journal
Capsule endoscopy represents an appealing alternative to conventional endoscopic procedures that cause discomfort to the patient and are considered tedious to the operator due to difficulty of endoscope manipulation because of the limited degrees of ...
Yasmin Khattab, Peter P. Pott
doaj   +1 more source

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