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Self-optimizing Uplink Outer Loop Power Control for WCDMA Network [PDF]

open access: yesRadioengineering, 2015
The increasing demands for high data rates, drives the efforts for more efficient usage of the finite natural radio spectrum resources. Existing wideband code division multiple access (WCDMA) uplink outer loop power control has difficulty to answer to ...
A. G. Markoc, G. Sisul
doaj   +4 more sources

Intelligent Energy Efficiency Maximization for Wirelessly-Powered UAV-Assisted Secure Sensor Network [PDF]

open access: yesSensors
The rapid proliferation of Internet of Things (IoT) devices and applications has led to an increasing demand for energy-efficient and secure communication in wireless sensor networks.
Fang Xu, Xinyu Zhang
doaj   +2 more sources

Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network

open access: yesSensors, 2021
Non-orthogonal multiple access (NOMA) has been extensively studied to improve the performance of the Terrestrial-Satellite Integrated Network (TSIN) on account of the shortage of frequency band resources.
Yanjun Yan   +4 more
doaj   +1 more source

Joint Optimization of Bandwidth and Power Allocation in Uplink Systems with Deep Reinforcement Learning

open access: yesSensors, 2023
Wireless resource utilizations are the focus of future communication, which are used constantly to alleviate the communication quality problem caused by the explosive interference with increasing users, especially the inter-cell interference in the multi-
Chongli Zhang   +5 more
doaj   +1 more source

Performance Analysis of a Single Light Source Bidirectional Visible Light Communication Reverse Reflection Link

open access: yesPhotonics, 2023
Visible light communication has the advantages of large bandwidth, high security, and no RF interference, among which LED light sources are an important light source for indoor visible light communication.
Ying Zhang   +3 more
doaj   +1 more source

Uplink Channel Access Enhancement for Cellular Communication in Unlicensed Spectrum

open access: yesIEEE Access, 2020
3GPP cellular communications in unlicensed spectrum allow transmission only after completing listen-before-talk (LBT) operation. For downlink, the LBT operation helps cellular traffic to coexist well with Wi-Fi traffic.
Jihoon Kim, Jaehong Yi, Saewoong Bahk
doaj   +1 more source

Performance Analysis of UAV Assisted Mobile Communications in THz Channel

open access: yesIEEE Access, 2021
The huge available bandwidth in Terahertz (THz) frequency band is recently contemplated to achieve high data rate wireless communications. Consequently, THz communications are attractive candidates to fulfill the continuous ever–increasing ...
Sara Farrag   +3 more
doaj   +1 more source

The Upstream Matters: Impact of Uplink Performance on YouTube 360° Live Video Streaming in LTE

open access: yesIEEE Access, 2021
Live video streaming services are gaining momentum as network and terminal capabilities improve. However, 360° live video streaming services pose new challenges due to its high bandwidth and computational requirements both on the user and service ...
Luis Roberto Jimenez   +4 more
doaj   +1 more source

UMTS uplink simulator [PDF]

open access: yesCommunications - Scientific letters of the University of Zilina, 2004
This paper presents the link level simulator developed at the Telecommunication Department of the University of Žilina. The simulator was developed as part of the project VEGA No. 1/0140/03 "Effective radio resources management methods in next generations of mobile communication networks" and it will be used in the more complex radio interface ...
Vladimir Wieser, Tomas Marek
openaire   +2 more sources

Atmospheric Pre-Compensation of Ground-to-Space Communications with Adaptive Optics: Past, Present and Future—A Field Review

open access: yesPhotonics, 2023
Conventionally used in astronomy, adaptive optics (AO) systems measure and correct for turbulence and, therefore, have the capability to mitigate the impact of the atmosphere on the ground-to-space communication links.
Noelia Martinez
doaj   +1 more source

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