Results 1 to 10 of about 999 (113)

Performance and simulation analysis of 802.11ax OFDMA in contention-driven scenarios [PDF]

open access: yesPeerJ Computer Science
The 802.11ax standard introduces Orthogonal Frequency Division Multiple Access (OFDMA), shifting the role of access points (APs) in Wi-Fi networks. This shift integrates intricate scheduling logic, assigning coordinator roles to APs for multi-user uplink
Memoona, Sung Won Kim
doaj   +3 more sources

Experimental Assessment of Trigger-Based MU-OFDMA for Deterministic Wi-Fi 6 Operation on COTS Devices [PDF]

open access: yesSensors
Wireless networks are increasingly considered for industrial and time-critical applications, where flexible deployment must be reconciled with predictable communication behaviour.
Federico Orozco-Santos   +2 more
doaj   +2 more sources

IEEE 802.11ax OFDMA Resource Allocation with Frequency-Selective Fading [PDF]

open access: yesSensors, 2021
This paper studies the usage of orthogonal frequency division multiple access (OFDMA) for uplink transmissions in IEEE 802.11ax networks. OFDMA enables simultaneous multi-user transmissions in Wi-Fi, but its usage requires efficient resource allocation ...
Sergei Tutelian   +3 more
doaj   +2 more sources

Spatial Clustering Group Based OFDMA Access Protocol for the Next Generation WLAN [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The next generation wireless local area network (WLAN) needs to significantly improve the area throughput in high dense scenario. Orthogonal Frequency Division Multiple Access (OFDMA), considered as the key technology of next generation WLAN, has been ...

doaj   +1 more source

On Joint Sub-channel Allocation, Duplexing Mode Selection, and Power Control in Full-Duplex Co-Channel Femtocell Networks [PDF]

open access: yesAUT Journal of Electrical Engineering, 2018
As one of the promising approaches to increase the network capacity, Full-duplex (FD) communications have recently gained a remarkable attention. FD communication enables wireless nodes to simultaneously send and receive data through the same frequency ...
M. Rasti, Sh. Kazemi Taskou
doaj   +1 more source

Konsep Transmisi Tidak Koheren menggunakan Differential Unitary Modulation pada OFDMA

open access: yesJurnal Elkomika, 2021
ABSTRAK Differential modulation adalah sebuah teknik modulasi yang memungkinkan pengiriman informasi tanpa diperlukannya estimasi kondisi kanal di sisi penerima.
DHONI PUTRA SETIAWAN   +2 more
doaj   +1 more source

Advanced Receiver Design for Quadrature OFDMA Systems

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
Quadrature orthogonal frequency division multiple access (Q-OFDMA) systems have been recently proposed to reduce the peak-to-average power ratio (PAPR) and complexity, and improve carrier frequency offset (CFO) robustness and frequency diversity for the ...
Lin Luo   +2 more
doaj   +2 more sources

An multi-BSS multi-user full duplex MAC protocol based on AP cooperation for the next generation WLAN

open access: yesXibei Gongye Daxue Xuebao, 2021
Aiming at the problems of low efficiency of buffer information collection and sharp drop of system throughput caused by the aggravation of conflicts in the multi basic service set (BSS) high density deployment overlap coverage scenario of next generation

doaj   +1 more source

Performance analysis of wireless compressed-image transmission over DST-based OFDMA systems

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
Multimedia data, like images, consumes significant bandwidth when transmitted over wireless systems. Therefore, compressing transmitted images becomes crucial to reduce the required bandwidth and improve energy efficiency.
Nagi H. Al-Ashwal   +3 more
doaj   +1 more source

OFDMA Based QoS-Oriented Guarantee Novelty Multiple Access Protocol [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The next generation wireless local area network (WLAN) 802.11ax standards committee takes high quality of service(QoS) guarantee as one of important technology goals of the next generation WLAN.

doaj   +1 more source

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