Results 41 to 50 of about 45,537 (246)

Expanding cellular coverage via cell-edge deployment in heterogeneous networks: spectral efficiency and backhaul power consumption perspectives [PDF]

open access: yes, 2014
Heterogeneous small-cell networks (HetNets) are considered to be a standard part of future mobile networks where operator/consumer deployed small-cells, such as femtocells, relays, and distributed antennas (DAs), complement the existing macrocell ...
Imran, Muhammad   +4 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

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

M2M meets D2D: Harnessing D2D interfaces for the aggregation of M2M data [PDF]

open access: yes2017 IEEE International Conference on Communications (ICC), 2017
Direct device-to-device (D2D) communication presents as an effective technique to reduce the load at the base station (BS) while ensuring reliable localized communication. In this paper, we propose a large-scale M2M data Aggregation and Trunking (MAT) scheme, whereby the user equipments (UEs) aggregate M2M data from the nearby MTDs and trunk this data ...
Asma Afzal   +4 more
openaire   +1 more source

Intratrial Exposure to Vitamin D and New-Onset Diabetes Among Adults With Prediabetes: A Secondary Analysis From the Vitamin D and Type 2 Diabetes (D2d) Study

open access: yesDiabetes Care, 2020
OBJECTIVE Postrandomization biases may influence the estimate of efficacy of supplemental vitamin D in diabetes prevention trials. In the Vitamin D and Type 2 Diabetes (D2d) study, repeated measures of serum 25-hydroxyvitamin D [25(OH)D] level provided ...
B. Dawson-Hughes   +8 more
semanticscholar   +1 more source

Multi-Stage Hybrid Federated Learning Over Large-Scale D2D-Enabled Fog Networks [PDF]

open access: yesIEEE/ACM Transactions on Networking, 2020
Federated learning has generated significant interest, with nearly all works focused on a “star” topology where nodes/devices are each connected to a central server.
Seyyedali Hosseinalipour   +6 more
semanticscholar   +1 more source

Two-player D2D interference canceling games [PDF]

open access: yes2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017
We investigate a set of non-cooperative radio resource management games in a Gaussian interference channel, where the receivers are equipped with two stage Successive Interference Cancellers (SIC). In these games users decide on their transmission power, rate and Interference Canceling (IC) strategy.
Tirkkonen, Olav   +3 more
openaire   +2 more sources

An Optimal Balanced Energy Harvesting Algorithm for Maximizing Two-Way Relaying D2D Communication Data Rate

open access: yesIEEE Access, 2022
Combining energy harvesting (EH) and device-to-device (D2D) communication underlaying 5G cellular networks is a very promising direction to improve both energy and spectral efficiencies.
Mahmoud M. Salim   +4 more
semanticscholar   +1 more source

Resource Allocation for Network-Integrated Device-to-Device Communications Using Smart Relays

open access: yes, 2013
With increasing number of autonomous heterogeneous devices in future mobile networks, an efficient resource allocation scheme is required to maximize network throughput and achieve higher spectral efficiency.
Hasan, Monowar, Hossain, Ekram
core   +1 more source

Game-theoretic Resource Allocation Methods for Device-to-Device (D2D) Communication [PDF]

open access: yes, 2014
Device-to-device (D2D) communication underlaying cellular networks allows mobile devices such as smartphones and tablets to use the licensed spectrum allocated to cellular services for direct peer-to-peer transmission.
Han, Zhu   +3 more
core   +1 more source

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