Results 31 to 40 of about 13,512 (184)

D2D Communications Underlaying Wireless Powered Communication Networks

open access: yesIEEE Transactions on Vehicular Technology, 2018
In this paper, we investigate the resource allocation problem for D2D communications underlaying wireless powered communication networks, where multiple D2D pairs harvest energy from a power station equipped with multiple antennas and then transmit information signals simultaneously over the same spectrum resource.
Haichao Wang   +3 more
openaire   +2 more sources

Resource Allocation for Energy-Efficient Device-to-Device Communication in 4G Networks

open access: yes, 2014
Device-to-device (D2D) communications as an underlay of a LTE-A (4G) network can reduce the traffic load as well as power consumption in cellular networks by way of utilizing peer-to-peer links for users in proximity of each other.
Alamouti, Sajjad Mehri   +1 more
core   +1 more source

Power Control and Channel Allocation for D2D Underlaid Cellular Networks [PDF]

open access: yes, 2018
Device-to-Device (D2D) communications underlaying cellular networks is a viable network technology that can potentially increase spectral utilization and improve power efficiency for proximitybased wireless applications and services.
Abdallah, Asmaa   +2 more
core   +2 more sources

Secure communications with D2D cooperation

open access: yes2015 International Conference on Communications, Signal Processing, and their Applications (ICCSPA'15), 2015
Device to Device (D2D) communications provides a promising technique for 5G wireless networks, supporting higher data rates. Security of data transmission over wireless clouds could put constraints on devices; whether to cooperate or not. Therefore, our aim is to provide analytical framework for the security at the physical layer and to define the ...
Samah A. M. Ghanem, Munnujahan Ara
openaire   +3 more sources

Efficiency Intra-Cluster Device-to-Device Relay Selection for Multicast Services Based on Combinatorial Auction

open access: yesAlgorithms, 2015
In Long Term Evolution-Advanced (LTE-A) networks, Device-to-device (D2D) communications can be utilized to enhance the performance of multicast services by leveraging D2D relays to serve nodes with worse channel conditions within a cluster.
Yong Zhang, Fangmin Li
doaj   +1 more source

Device-to-Device Communications Enabled Energy Efficient Multicast Scheduling in mmWave Small Cells

open access: yes, 2017
To keep pace with the rapid growth of mobile traffic demands, dense deployment of small cells in millimeter wave (mmWave) bands has become a promising candidate for next generation wireless communication systems.
Chen, Xinlei   +5 more
core   +1 more source

Spectral and Energy Efficiency Analysis of mmWave Communications With Channel Inversion in Outband D2D Network

open access: yesIEEE Access, 2018
Device-to-device (D2D) communications is a promising approach for wireless communications in terms of energy and spectrum efficiency. However, such communications increase interferences in a cellular network.
Romain Chevillon   +3 more
doaj   +1 more source

D2D Assisted Cellular Networks in Licensed and Unlicensed Spectrum: Matching-Iteration-Based Joint User Access and Resource Allocation

open access: yesAlgorithms, 2021
Device-to-Device (D2D) communications, which enable direct communication between nearby user devices over the licensed spectrum, have been considered a key technique to improve spectral efficiency and system throughput in cellular networks (CNs). However,
Qiuqi Han, Guangyuan Zheng, Chen Xu
doaj   +1 more source

Device-to-device communications: a performance analysis in the context of social comparison-based relaying [PDF]

open access: yes, 2017
Device-to-device (D2D) communications are recognized as a key enabler of future cellular networks which will help to drive improvements in spectral efficiency and assist with the offload of network traffic.
Allen, Stuart M.   +5 more
core   +2 more sources

Operational Region of D2D Communications for Enhancing Cellular Network Performance

open access: yes, 2015
An important enabler towards the successful deployment of any new element/feature to the cellular network is the investigation and characterization of the operational conditions where its introduction will enhance performance.
Alexiou, Angeliki   +2 more
core   +1 more source

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