Results 71 to 80 of about 22,554 (188)

OFDMA for Pinching-Antenna Systems

IEEE Communications Letters
Pinching-antenna (PA) systems route millimeter wave (mmWave) signals through a leaky waveguide and radiate them at "pinch" apertures, offering low-cost line-of-sight (LoS) coverage. However, when multiple PAs serve multiple users simultaneously, the downlink channel becomes strongly frequency-selective, creating inter-symbol interference (ISI) that ...
Thrassos K. Oikonomou, Sotiris A. Tegos, Panagiotis D. Diamantoulakis, Yuanwei Liu, George K. Karagiannidis   +4 more
openaire   +2 more sources

RETRACTED: Resource allocation for integrated satellite‐terrestrial networks based on RSMA

IET Communications, Volume 19, Issue 1, January/December 2025.
We first establish a downlink transmission framework for the integrated satellite‐terrestrial network based on RSMA, to achieve high data rate transmission of virtual reality applications globally. Then, considering some practical constraints, a joint resource allocation problem of rate and transmission power is formulated.
Jianfeng Shi, Husheng Yang, Xiao Chen, Zhaohui Yang   +3 more
wiley   +1 more source

Digital twin assisted multi‐task offloading for vehicular edge computing under SAGIN with blockchain

IET Communications, Volume 19, Issue 1, January/December 2025.
This paper proposes to use the space–air–ground integrated network with blockchain to enhance the network capability and the privacy protection of vehicular edge networks, and take the digital twin (DT) to design a DT‐assisted structure for vehicular edge computing to capture the dynamic characteristics of vehicles and the entire environment.
Qiyong Chen, Chunhai Li, Mingfeng Chen, Maoqiang Wu, Gen Zhang   +4 more
wiley   +1 more source

Green communication for OverGNN enabled heterogeneous ultra‐dense networks

IET Communications, Volume 19, Issue 1, January/December 2025.
The heterogeneous graph neural network (GNN) is constructed with a novel high‐dimensional computation structure (namely OverGNN) for the power allocation problem under heterogeneous ultra‐dense networks in this work. Based on this fact, an efficient message passing scheme for user equipments under the same base station is developed to approximate the ...
Jun Zeng, Sisi Lin, Yuhan Ai, Guo Wan, Wei Luo, Qimei Chen   +5 more
wiley   +1 more source

Access Point Selection and Localization for Cluster‐Based Realization of a Device‐to‐Device Cell‐Free 6G Communications Network

IET Communications, Volume 19, Issue 1, January/December 2025.
We introduce a fully distributed framework that leverages belief‐desire‐intention extended (BDIx) agents on user devices to perform dynamic clustering and access‐point selection in a cell‐free 6G network, using both classical and deep‐learning methods for deterministic, scalable AP grouping.
Iakovos Ioannou, Marios Raspopoulos, Prabagarane Nagaradjane, Christophoros Christophorou, Andreas Gregoriades, Vasos Vassiliou   +5 more
wiley   +1 more source

Analytical Evaluation of the Performance of Proportional Fair Scheduling in OFDMA-Based Wireless Systems

Journal of Electrical and Computer Engineering, 2012
This paper provides an analytical evaluation of the performance of proportional fair (PF) scheduling in Orthogonal Frequency-Division Multiple Access (OFDMA) wireless systems.
Mohamed H. Ahmed, Octavia A. Dobre, Rabie K. Almatarneh   +2 more
doaj   +1 more source

Energy‐Efficient Joint Resource Management and Trajectory Planning in UAV‐Assisted NOMA‐Based Mobile Edge Computing Networks

IET Communications, Volume 19, Issue 1, January/December 2025.
This article tackles the problem of energy‐efficient joint resource management and UAV trajectory optimisation in such networks by incorporating Non‐Orthogonal Multiple Access (NOMA). ABSTRACT With the increasing demand for high‐quality, computing‐intensive mobile services, the next‐generation networks must provide users with instantly available and ...
Hossein Rahmani, Ghasem Mirjalily, Jamshid Abouei   +2 more
wiley   +1 more source

Exploiting Interference Alignment in Multi-Cell Cooperative OFDMA Resource Allocation

, 2011
This paper studies interference alignment (IA) based multi-cell cooperative resource allocation for the downlink OFDMA with universal frequency reuse. Unlike the traditional scheme that treats subcarriers as separate dimensions for resource allocation ...
Da, Bin, Zhang, Rui
core   +1 more source

Rate Splitting Multiple Access in V2X

IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
This paper investigates the integration of rate‐splitting multiple access (RSMA) into cellular vehicle‐to‐everything (C‐V2X) networks to enhance resource allocation and interference management in decentralized, ad‐hoc vehicular communication environments.
Arun Kumar, Sumit Chakravarthy, Rashid Amin, Aziz Nanthaamornphong   +3 more
wiley   +1 more source

Adaptive OFDMA Resource Allocation using Modified Multi-Dimension Genetic Algorithm [PDF]

Iraqi Journal for Electrical and Electronic Engineering, 2016
A considerable work has been conducted to cope with orthogonal frequency division multiple access (OFDMA) resource allocation with using different algorithms and methods. However, most of the available studies deal with optimizing the system for one or
Mohammed Khalid Ibrahim, Haider M. AlSabbagh   +1 more
doaj