Results 81 to 90 of about 22,554 (188)
Adaptive downlink OFDMA resource allocation [PDF]
2008 42nd Asilomar Conference on Signals, Systems and Computers, 2008 Optimizing OFDMA resource allocation with respect to communication performance requires solving a nonlinear mixed-integer programming problem. As a result, many researchers have fallen back on suboptimal heuristic algorithms. In a recent paper, we demonstrate that ergodic rate maximization is possible using a dual optimization framework that results in
Ian C. Wong, Brian L. Evans
openaire +1 more source
IET Networks, Volume 14, Issue 1, January/December 2025.In emergency situations where ground base stations are disabled, UAVs, due to their low cost and high adaptability, restore communication coverage in remote areas. The main challenge is optimally determining the three‐dimensional positions of the UAVs to meet dynamic user demand and reduce interference.
Nooshin Boroumand Jazi +2 more
wiley +1 more source
Joint User Scheduling and MU-MIMO Hybrid Beamforming Algorithm for mmWave FDMA Massive MIMO System
International Journal of Antennas and Propagation, 2016 The large bandwidth and multipath in millimeter wave (mmWave) cellular system assure the existence of frequency selective channels; it is necessary that mmWave system remains with frequency division multiple access (FDMA) and user scheduling. But for the
Jing Jiang, Deting Kong
doaj +1 more source
Rate Adaptive Based Resource Allocation with Proportional Fairness Constraints in OFDMA Systems
Sensors, 2015 Orthogonal frequency division multiple access (OFDMA), which is widely used in the wireless sensor networks, allows different users to obtain different subcarriers according to their subchannel gains.
Zhendong Yin +3 more
doaj +1 more source
Impact of Mobility on the Sum Rate of NB-OFDMA Based Mobile IoT Networks
, 2016 In future Internet of Things (IoT) networks, the explosive growth of mobile devices compel us to reconsider the effectiveness of the current frequency-division multiple access (FDMA) schemes.
Jiao, Chunxu +2 more
core +1 more source
Joint Weighted Dynamic Resources Optimisation in Green Open Radio Access Network
IET Networks, Volume 14, Issue 1, January/December 2025.The paper presents an optimisation framework for the off‐grid green open radio access network architecture using renewable energy, aiming to optimise power and bandwidth allocation, ensure high data rates and improve service quality, considering factors like power consumption and maintenance cost. ABSTRACT The rapid growth of interconnected devices and
Raad S. Alhumaima +3 more
wiley +1 more source
OFDMA para Sistemas de Banda Ancha Inalámbrica
Prisma Tecnológico, 2009 Este artículo describe el sistema de Acceso Múltiple por División de Frecuencia Ortogonal (OFDMA), un método de modulación para la segunda generación de acceso a banda ancha inalámbrica.
Daniel Tuñón, Ramón Ortega
doaj
IET Software, Volume 2025, Issue 1, 2025.Effective resource allocation is a fundamental challenge for software systems in Internet of Things (IoT) networks, influencing their performance, energy consumption, and scalability in dynamic environments. This study introduces a new framework, DRANet–graph convolutional network (GCN)+, which integrates GCNs, transformer architectures, and ...
Kiran Rao P. +7 more
wiley +1 more source
International Journal of Digital Multimedia Broadcasting, 2012 We study the important problem of resource allocation for the downlink of Multiple-Input Multiple output (MIMO) Multicast Wireless Systems operating over frequency-selective channels and we propose a low-complexity but efficient resource allocation ...
Ioannis G. Fraimis +1 more
doaj +1 more source
IET Wireless Sensor Systems, Volume 15, Issue 1, January/December 2025.The paper proposes a containerised edge computing model for power optimisation in 6G‐inspired massive Internet‐of‐Things applications. The problem is formulated as a central processing unit energy consumption cost function based on quasi‐finite system observations. Results show that the model performs better compared to a competitive baseline algorithm.
Babatunde S. Awoyemi +1 more
wiley +1 more source