Results 11 to 20 of about 5,516 (118)
IRS assisted hybrid HAP UAV uplink NOMA networks: an interference aware optimization framework [PDF]
Scientific ReportsThis paper investigates an intelligent reflecting surface (IRS)-assisted hybrid high-altitude platform (HAP) and unmanned aerial vehicle (UAV) uplink communication network employing non-orthogonal multiple access (NOMA).
Asma A. Alhashmi +7 more
doaj +2 more sources
Transmission Delay-Based Uplink Multi-User Scheduling in IEEE 802.11ax Networks
Applied Sciences (Switzerland), 2021 As the demands for uplink traffic increase, improving the uplink throughput has attracted research attention in IEEE 802.11 networks. To avoid excessive competition among stations and enhance the uplink throughput performance, the IEEE 802.11ax standard ...
Yonggang Kim +2 more
exaly +3 more sources
Dynamic Divide Grouping Non-Orthogonal Multiple Access in Terrestrial-Satellite Integrated Network
Sensors, 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
Sensors, 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
Photonics, 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
IEEE 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
IEEE 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
IEEE 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
Photonics, 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
Low-Complexity Detectors for Uplink Massive MIMO Systems Leveraging Truncated Polynomial Expansion
IEEE Access, 2022 In this work, we propose low-complexity detectors for massive multiple-input multiple-output (MIMO) systems. Particularly, we leverage variants of truncated polynomial expansion (TPE) in order to reduce the computational complexity of the signal ...
Kazem Izadinasab +2 more
doaj +1 more source