Energy-efficiency for MISO-OFDMA based user-relay assisted cellular networks [PDF]
, 2020 The concept of improving energy-efficiency (EE) without sacrificing the service quality has become important nowadays. The combination of orthogonal frequency-division multiple-access (OFDMA) multi-antenna transmission technology and relaying is one of ...
Baştürk, İlhan, Chen, Yunfei
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Radio resource allocation for uplink OFDMA systems with finite symbol alphabet inputs [PDF]
, 2014 In this paper, we consider the radio resource allocation problem for uplink orthogonal frequency-division multiple-access (OFDMA) systems. The existing algorithms have been derived under the assumption of Gaussian inputs due to its closed-form expression
Al-Imari, Mohammed +3 more
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Non-Orthogonal Multiple Access for Hybrid VLC-RF Networks with Imperfect Channel State Information [PDF]
, 2020 The present contribution proposes a general framework for the energy efficiency analysis of a hybrid visible light communication (VLC) and Radio Frequency (RF) wireless system, in which both VLC and RF subsystems utilize nonorthogonal multiple access ...
Al-Qutayri, Mahmoud +4 more
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MU-MIMO enabled uplink OFDMA MAC protocol in dense IEEE 802.11ax WLANs
ICT Express, 2020 IEEE 802.11ax supports orthogonal frequency division multiple access (OFDMA) for uplink (UL) transmissions where stations (STAs) access randomly chosen resource units (RUs) in a distributed manner.
Sohyun Joo +3 more
doaj +1 more source
Application of Wi-Fi 6 Technology in Coal Mine
Meikuang Anquan, 2020 The wireless network coverage scheme of Wi-Fi 6 in underground coal mine is designed to solve the problem that 5G communication cannot achieve the whole mine signal coverage in underground coal mine.
ZHANG Jinhao, CHEN Min
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Performance evaluation of channel estimation techniques for MIMO-OFDM systems with adaptive sub-carrier allocation [PDF]
, 2006 Dynamic Sub-Carrier Allocation (DSA) strategies have been shown previously to achieve significant performance benefits when applied to OFDMA systems and further benefits for MIMOOFDMA systems.
Armour, SMD, McGeehan, JP, Peng, Y
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Multicast broadcast services support in OFDMA-based WiMAX systems [Advances in mobile multimedia] [PDF]
, 2007 Multimedia stream service provided by broadband wireless networks has emerged as an important technology and has attracted much attention. An all-IP network architecture with reliable high-throughput air interface makes orthogonal frequency division ...
Chen, HH, Jiang, T, Ni, Q, Xiang, W
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Research of the total spectral density of signals in the LTE up-link
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2020 This article is devoted to the analysis of the total spectral radiation density of LTE subscriber terminals. The LTE network uses orthogonal frequency division multiple access (OFDMA) technology for downlink communications, and multiple access technology
A. A. Novikova +2 more
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The Journal of Engineering, 2023 Transmitting images over an Orthogonal Frequency Division Multiplexing Access (OFDMA) system poses a significant challenge. The process entails sending a substantial amount of data, which consumes a significant amount of bandwidth.
Khaled A. M. Al Soufy +3 more
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Analysis of Low Probability of Detection Capability for Chaotic Standard Map-Based FH-OFDMA System
Applied Sciences, 2021 A frequency hopping orthogonal frequency division multiple access (FH-OFDMA) can provide low probability of detection (LPD) and anti-jamming capabilities to users against adversary detectors. To obtain an extreme LPD capability that cannot be provided by
Junwoo Jung +4 more
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