Results 41 to 50 of about 10,206 (164)

DRL‐Based Joint Clustering and Trajectory Optimization for UAV‐Assisted Emergency Networks

IET Communications, Volume 20, Issue 1, January/December 2026.
6G is expected to see unprecedented data traffic surges. UAV‐assisted MEC aids emergency communications but faces challenges from dynamic user mobility and heterogeneous tasks. To address these, the proposed KM‐PPO integrates interference‐aware k‐means clustering (for user aggregation and initial UAV deployment) and PPO (for stable policy updates and ...
Ruirui Xu, Yuanmo Lin, Jian Huang, Huayong Xu, Zhongyue Lei   +4 more
wiley   +1 more source

A distributed algorithm for wireless resource allocation using coalitions and the Nash bargaining solution [PDF]

, 2011
In this paper a distributed, low-complexity, fast and fair resource allocation algorithm for a multiuser, wireless LTE OFDMA channel is proposed. Based on the game theoretic concept of the Nash Bargaining Solution and by grouping users into coalitions of
Vatsikas, S, De Vos, Marina, Lewis, Tim, Armour, SMD   +3 more
core   +1 more source

ENHANCEMENT OF CODE DIVISION MULTIPLE ACCESS (CDMA) WITHIN THE GSM SYSTEM IN IRAQ

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Despite the widespread adoption of Global System for Mobile Communications (GSM) in Iraq, the network's capacity and performance limitations have become increasingly apparent, particularly in urban areas with high user density. Currently, LTE (4G) is the
Nabil Abdulwahab Abdulrazaq Baban
doaj   +1 more source

Spectral Efficiency Comparison of OFDM and MC-CDMA with Carrier Frequency Offset [PDF]

Radioengineering, 2017
Inter-carrier interference and multiple access interference due to carrier frequency offset (CFO) are two major factors that deteriorate the performance of orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple ...
J. Ahmed
doaj  

Joint Decision‐Making for UAV Deployment and Computational Offloading Optimized for Energy Consumption and Latency in Space‐Air‐Ground Integrated Networks

IET Communications, Volume 20, Issue 1, January/December 2026.
Within the framework of integrated space‐air‐ground edge computing networks, this paper investigates the joint optimization of task allocation, user‐UAV association, UAV deployment, and computation resource allocation between UAVs and the LEO satellite.
Tengda Huang, Tao Hu, Di Wu, Wenzhi Zhao
wiley   +1 more source

Communication‐Security Co‐Design for Federated Learning in Grant‐Free NOMA IoT Networks

IET Communications, Volume 20, Issue 1, January/December 2026.
This article presents SA‐PPO, a Security‐Aware Proximal Policy Optimisation framework for federated learning over grant‐free NOMA (non‐orthogonal multiple access) in IoT networks. By jointly optimising access control, resource allocation, and trust‐weighted aggregation using cross‐layer indicators, SA‐PPO enhances both communication reliability and ...
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

Using OFDMA for MU-MIMO User Selection in 802.11ax-Based Wi-Fi Networks

IEEE Access, 2019
Two innovative multi-user (MU) communication mechanisms, multi-user multi-input multi-output (MU-MIMO) and orthogonal frequency division multiple access (OFDMA), have recently attracted much attention as key technologies to boost the capabilities of 802 ...
Kyu-Haeng Lee
doaj   +1 more source

Federated Split Learning for Large Language Models With RSMA

IET Communications, Volume 20, Issue 1, January/December 2026.
This study proposes a federated split learning framework for large language models (FedsLLM) integrated with rate‐splitting multiple access (RSMA), aimed at enhancing the efffciency and privacy of LLM training in wireless communication systems. ABSTRACT This study proposes a federated split learning framework for large language models (FedsLLM ...
Jianxin Dai, Rui Tang, Feibo Jiang, Zhaohui Yang, Qianqian Yang, Zhaoyang Zhang, Linqing Gui   +6 more
wiley   +1 more source

Yeni Nesil Kablosuz Ağ Teknolojisi: Wimax Standardının İncelenmesi

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2016
Wimax (Worldwide Interoperability for Microwave Access) teknolojisi, Wimax Forum tarafından çeşitli standartları geliştirilen, geniş alanda iletişim sağlayan bir kablosuz ağ teknolojisidir. Çalışma boyunca Wimax hakkında bilgi verilmiştir.
Arafat Şentürk, Zehra Karapınar Şentürk, Meryem Şentürk, Metin Çifci, Ekrem Başer   +4 more
doaj  

RPDMA: A PAPR-Aware Multiple Access Scheme

IEEE Open Journal of Vehicular Technology
This article proposes a novel Multiple Access (MA) scheme called Ramanujan Periodic-subspace Division Multiple Access (RPDMA) for subcarrier sizes $N = 2^{m},\ m\in \mathbb {N}$, to address the high Peak-to-Average Power Ratio (PAPR) in Orthogonal ...
Goli Srikanth, Shaik Basheeruddin Shah, Nazar T. Ali, Vijay Kumar Chakka, Jorge Querol, Ahmed Altunaiji, Dragan I. Olcan   +6 more
doaj   +1 more source