Results 31 to 40 of about 8,369,214 (277)

HUMIDITY EFFECT TO 5G PERFORMANCES UNDER PALEMBANG CHANNEL MODEL AT 28 GHZ

open access: yesJurnal Ilmiah SINERGI, 2020
The telecommunication has a tremendous improvement in terms of data rates and bandwidth requiring sufficient frequency allocation and wideband spectrum availability. The millimeter-wave frequency band is one of the solution to these requirements, however
Bengawan Alfaresi   +4 more
doaj   +1 more source

Non-orthogonal multiple access in full-duplex-based coordinated direct and relay transmission (CDRT) system: performance analysis and optimization

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
This paper considers non-orthogonal multiple access (NOMA)-based coordinated direct and relay transmission (CDRT) system, where the base station (BS) directly communicates with the nearby users while it requires the help of a dedicated relay to ...
Aswathi V, Babu A V
doaj   +1 more source

Modeling Analysis for Downlink RIS-UAV-Assisted NOMA over Air-to-Ground Line-of-Sight Rician Channels

open access: yesDrones
This paper proposes a drone-assisted NOMA communication system equipped with a reconfigurable intelligent surface (RIS). Given the Line-of-Sight nature of the Air-to-Ground link, a more realistic Rician fading environment is chosen for the study of ...
Suoping Li   +3 more
doaj   +1 more source

Outage performance for amplify-and-forward channels with an unauthenticated relay [PDF]

open access: yes2012 IEEE International Conference on Communications (ICC), 2012
We investigate a relay network where the source can potentially utilize an unauthenticated amplify-and-forward (AF) relay to augment its direct transmission of a confidential message to the destination. Since the relay is unauthenticated, it is desirable to protect the confidential data from it while simultaneously making use of it to increase the ...
Jing Huang 0008   +2 more
openaire   +1 more source

Hughie-HaoWu/Outage-recovery: v2.0

open access: yes, 2022
Full Changelog: https://github.com/Hughie-HaoWu/Outage-recovery/commits/v2.
Hughie-HaoWu
core   +1 more source

Multihop Diversity for Fading Mitigation in Multihop Wireless Networks [PDF]

open access: yes, 2011
The concept of multihop diversity is proposed, where all the nodes of a multihop link are assumed to have buffers for temporarily storing their received packets.
Yang, Lie-Liang   +2 more
core   +2 more sources

Trajectory Optimization for Cellular-Enabled UAV With Connectivity Outage Constraint

open access: yesIEEE Access, 2020
This paper studies the trajectory optimization problem of a single cellular-enabled unmanned aerial vehicle (UAV), taking into account the outage performance of the entire trajectory.
Yu-Jia Chen, Da-Yu Huang
doaj   +1 more source

Defeating Jamming Using Outage Performance Aware Joint Power Allocation and Access Point Placement in Uplink Pairwise NOMA

open access: yesIEEE Open Journal of the Communications Society, 2021
In this paper, an uplink pairwise Non-Orthogonal Multiple Access (NOMA) scenario using a mobile access point (AP) or an unmanned aerial vehicle in the presence of a jamming attack is considered.
Van-Lan Dao   +3 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

Dual Relay Selection for Cooperative NOMA With Distributed Space Time Coding

open access: yesIEEE Access, 2018
We consider a two-user multi-relay cooperative non-orthogonal multiple access (NOMA) network with distributed space-time coding. Two dual-relay selection strategies are proposed for cooperative NOMA, namely, two-stage dual relay selection with fixed ...
Jing Zhao   +4 more
doaj   +1 more source

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