Results 41 to 50 of about 9,808 (226)

Energy-Efficient Power Allocation and Relay Selection Schemes for Relay-Assisted D2D Communications in 5G Wireless Networks

open access: yesSensors, 2018
Device-to-device (D2D) communications allows user equipment (UE) that are in close proximity to communicate with each other directly without using a base station.
Md Arifur Rahman   +2 more
doaj   +1 more source

Pilot Reuse Among D2D Users in D2D Underlaid Massive MIMO Systems [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2018
15 pages, 9 figures, to appear in IEEE Transactions on Vehicular ...
Hao Xu 0003   +4 more
openaire   +2 more sources

Green Cooperative Device–to–Device Communication: a Social–Aware Perspective

open access: yesIEEE Access, 2016
As the mobile operators strive to accommodate the increasing load and capacity requirements, direct communication among users' devices, namely, device-to-device (D2D) communication, emerges as an advantageous solution for cellular traffic offloading ...
Eftychia Datsika   +3 more
doaj   +1 more source

Connectivity Times for Mobile D2D Networks [PDF]

open access: yes2018 IEEE International Conference on Communications (ICC), 2018
Connectivity questions for mobile D2D networks are often approached by considering steady state performance metrics. This is due to the difficulty in handling a finite time horizon with random mobility. Hence, in this paper we create a framework to evaluate connectivity time in closed form over a finite time horizon for mobile devices. The basic metric
Smith, P, Coon, J
openaire   +1 more source

Survey on Device to Device (D2D) Communication for 5GB/6G Networks: Concept, Applications, Challenges, and Future Directions

open access: yesIEEE Access, 2022
Device-to-device (D2D) communication is one of the most promising technologies in wireless cellular networks that can be employed to improve spectral and energy efficiency, increase data rates, and reduce links latency.
Mohammed Salih Mohammed Gismalla   +8 more
doaj   +1 more source

Energy-Aware D2D Communications

open access: yes, 2020
Device‐to‐device (D2D) communications, which enable proximity users to communicate directly without passing through BS, have been considered as one of the key techniques in the future 5G networks.
Tang, Jianhua   +11 more
core   +1 more source

Outage Performance Improvement by Selected User in D2D Transmission and Implementation of Cognitive Radio-Assisted NOMA

open access: yesSensors, 2019
In this paper, we investigate the outage performance in secondary network of cognitive radio (CR) employing non-orthogonal multiple access (NOMA) wireless networks over Rayleigh fading channels.
Dinh-Thuan Do   +2 more
doaj   +1 more source

Using d2d for Writing XML

open access: yesJournal of the Text Encoding Initiative
The textual structures of notes and publications in music theory and musical analysis bring challenging requirements: how to include music notation excerpts, graphics, and even combinations thereof into the typeset flow of paragraphs and the workflow ...
Markus Lepper   +1 more
doaj   +1 more source

Generalized Imperfect D2D Associations in Spectrum-Shared Cellular Networks Under Transmit Power and Interference Constraints

open access: yesIEEE Access, 2020
This paper studies imperfect underlay device-to-device (D2D) association in spectrum-shared cellular networks. It addresses important system and design interference constraints, processing load limitations and transmit power constraints at D2D terminals.
Redha M. Radaydeh   +4 more
doaj   +1 more source

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