Results 51 to 60 of about 10,206 (164)

Performance Analysis of QoS-Oriented OFDMA Protocol Based on IEEE 802.11ax for Cognitive Radio Network

Applied Sciences, 2023
To improve the quality of service (QoS) on the internet of medical things, a cognitive radio (CR) protocol based on orthogonal frequency division multiple access (OFDMA) is proposed, named CR-OFDMA.
Suoping Li, Hailing Yang, Ruiman Gao, Tongtong Jia, Hongli Li   +4 more
doaj   +1 more source

Optimisation Algorithm for Offloading Decision and Resource Allocation in Cache‐Assisted Multi‐UAV Mobile Edge Computing Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
The rapid expansion of the Internet of Things has led to an explosion of computation‐intensive tasks, making mobile edge computing (MEC) a critical enabling technology. Unmanned aerial vehicles (UAVs) are emerging as key components of these networks, yet their limited onboard resources and the dynamic nature of IoT environments present significant ...
Mengyuan Tao, Qi Zhu
wiley   +1 more source

OFDMA-Based Medium Access Control for Next-Generation WLANs

EURASIP Journal on Wireless Communications and Networking, 2009
Existing medium access control (MAC) schemes for wireless local area networks (WLANs) have been shown to lack scalability in crowded networks and can suffer from widely varying delays rendering them unsuited to delay sensitive applications, such as voice
H. M. Alnuweiri, Y. Pourmohammadi Fallah, P. Nasiopoulos, S. Khan   +3 more
doaj   +2 more sources

Secure Uplink IM-OFDMA With Artificial IQ Imbalance

IEEE Access, 2023
This study proposes a novel secure uplink index modulation-based orthogonal frequency division multiple access (IM-OFDMA) systems using artificial in-phase and quadrature imbalance (A-IQI).
Ozgur Alaca, Saud Althunibat, Serhan Yarkan, Scott L. Miller, Khalid A. Qaraqe   +4 more
doaj   +1 more source

Analysis and Optimisation of Multishaper Multidomain Time‐Sensitive Networks: State‐of‐the‐Art and Open Challenges

IET Cyber-Physical Systems: Theory &Applications, Volume 11, Issue 1, January/December 2026.
This paper presents a review of analysis and optimisation methodologies for multishaper and multidomain Time‐Sensitive Networks (TSN), examining the integration of the time‐aware shaper (TAS) with mechanisms such as CBS, ATS and CQF. We analyse orchestration architectures for TSN federation, DetNet and wireless integration, highlighting the scalability
Voica Gavriluţ, Paul Pop
wiley   +1 more source

MAC Protocol Design for Optical Wireless Body‐Area Networks: Latency, Energy Efficiency and Scalability Analysis

IET Networks, Volume 15, Issue 1, January/December 2026.
This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis, Mohammad‐Ali Khalighi, Stanislav Zvanovec, Vasilis K. Papanikolaou, Sotiris A. Tegos, George K. Karagiannidis   +5 more
wiley   +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, S. Armour, Ying Peng, McGeehan, JP, Peng, Y, Armour, SMD   +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, Awal, Md Abdul, Mohammad Ismat Kadir, Kadir, Rafiul, Ritu Saha, Rafiul Kadir, Md. Abdul Awal, Kadir, Mohammad Ismat   +7 more
core   +1 more source

CA‐PPO: Collision‐Aware Reinforcement Learning for Grant‐Free NOMA in Wireless Federated Learning

IET Networks, Volume 15, Issue 1, January/December 2026.
This paper proposes a collision‐aware proximal policy optimisation (CA‐PPO) framework for joint clustering and power allocation in grant‐free NOMA–enabled wireless federated learning systems. By explicitly accounting for random access collisions, SIC decoding failures and energy–latency constraints, the proposed approach stabilises learning under ...
Emmanuel Atebawone, Kwame Opuni‐Boachie Obour Agyekum, James Dzisi Gadze, Kwasi Adu‐Boahen Opare, Owusu Agyeman Antwi, Robert Akromond   +5 more
wiley   +1 more source

Artificial Intelligence Applications in Smart Cities: Integrating Communication, Energy Management, Cybersecurity and Internet of Things

The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.
ABSTRACT Smart cities represent transformative urban ecosystems, leveraging advanced technologies to address challenges posed by rapid urbanisation, energy efficiency demands, and sustainability goals. Despite extensive research, a comprehensive and integrated literature analysis combining AI‐based communication, energy management, cybersecurity, and ...
Maaz Tahir Malik, Hafiz Abdul Muqeet, Rizwan Akram, Hafiz Muhammad Obaid, Atiq ur Rehman, Amine Bermak   +5 more
wiley   +1 more source