Results 41 to 50 of about 8,421 (222)
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
doaj +1 more source
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
doaj +1 more source
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.
J. McGeehan +5 more
core +1 more source
Dimensioning of 5G Networks by Using Stochastic Geometry
International Journal of Information and Communication Technology Research, 2021 In this paper, we propose an analytical model for dimensioning of Orthogonal Frequency Division Multiple Access (OFDMA) systems in 5G networks by considering Internet of Thing (IoT) application using stochastic geometry.
Siminfar Samakoush Galougah +1 more
doaj
Cross-layer design for single-cell OFDMA systems with heterogeneous QoS and partial CSIT
, 2009 — This paper proposes a novel cross-layer scheduling scheme for a single-cell orthogonal frequency division multiple access (OFDMA) wireless system with partial channel state information (CSI) at transmitter (CSIT) and heterogeneous user delay ...
Charilaos Zarakovitis +8 more
core +1 more source
Clipping noise compensation for OFDMA systems [PDF]
, 2009 This paper presents an efficient low-complexity clipping noise compensation scheme for PAR reduced orthogonal frequency division multiple access (OFDMA) systems.
Jian Zhang +5 more
core +1 more source
On the dimensioning of cellular OFDMA networks [PDF]
Physical Communication, 2012 In this paper, we address the issue of cellular OFDMA networks dimensioning. Network design consists of evaluating cell coverage and capacity and may involve many parameters related to environment, system configuration, and quality of service (QoS) requirements.
Jean-Marc Kelif +2 more
openaire +1 more source
Maximizing energy-efficiency in multi-relay OFDMA cellular networks
, 2013 This contribution presents a method of obtaining the optimal power and subcarrier allocations that maximize the energy-efficiency (EE) of a multi-user, multi-relay, orthogonal frequency division multiple access (OFDMA) cellular network.
Cheung, Kent Tsz Kan +5 more
core +1 more source
Resource allocation for OFDMA-based cognitive radio networks with application to H.264 scalable video transmission [PDF]
, 2011 Resource allocation schemes for orthogonal frequency division multiple access- (OFDMA-) based cognitive radio (CR) networks that impose minimum and maximum rate constraints are considered.
Bocus, MZ +5 more
core +1 more source
Deep Bidirectional LSTM Network Learning-Aided OFDMA Downlink and SC-FDMA Uplink
, 2021 In this paper, deep learning (DL)-aided signal detection is proposed for the orthogonal frequency division multiple access (OFDMA) in the downlink and for the single carrier frequency division multiple access (SC-FDMA) in the uplink. A deep bidirectional
Saha, Ritu +7 more
core +1 more source