Results 101 to 110 of about 27,923 (259)

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

Pattern Division Multiple Access with Large-scale Antenna Array

, 2017
In this paper, pattern division multiple access with large-scale antenna array (LSA-PDMA) is proposed as a novel non-orthogonal multiple access (NOMA) scheme.
Jiang, Yanxiang, Kang, Shaoli, Li, Peng, You, Xiaohu, Zheng, Fuchun   +4 more
core   +1 more source

PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM

Applied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.
This research presents a novel hybrid optimization framework combining artificial neural networks (ANN) and particle swarm optimization (PSO) to mitigate the high peak‐to‐average power ratio (PAPR) in asymmetrically clipped optical‐orthogonal frequency division multiplexing (ACO‐OFDM) systems. While conventional PTS effectively reduces PAPR, it suffers
Hermansyah Alam, Anuar Mat Safar, Norizan Mohamed Nawawi, Mohd Nordin Junita, Aymen Abdalmunam Hameed, Ridha Ejbali   +5 more
wiley   +1 more source

Modeling and Analysis of Uplink Non-Orthogonal Multiple Access (NOMA) in Large-Scale Cellular Networks Using Poisson Cluster Processes [PDF]

, 2016
Hina Tabassum, Ekram Hossain, Md. Jahangir Hossain   +2 more
openalex   +2 more sources

Investigation on Evolving Single-Carrier NOMA Into Multi-Carrier NOMA in 5G

IEEE Access, 2018
Non-orthogonal multiple access (NOMA) is one promising technology, which provides high system capacity, low latency, and massive connectivity, to address several challenges in the fifth-generation wireless systems. In this paper, we first reveal that the
Jie Zeng, Tiejun Lv, Ren Ping Liu, Xin Su, Mingyao Peng, Chang Wang, Jiajia Mei   +6 more
doaj   +1 more source

Impact of User Pairing on 5G Non-Orthogonal Multiple Access

, 2014
Non-orthogonal multiple access (NOMA) represents a paradigm shift from conventional orthogonal multiple access (MA) concepts, and has been recognized as one of the key enabling technologies for 5G systems. In this paper, the impact of user pairing on the
Ding, Zhiguo, Fan, Pingzhi, Poor, H. Vincent   +2 more
core  

PASS‐NOMA: Waveguide Channel‐Aware User Pairing With Adaptive SIC

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
This paper proposes a new framework called pinching antenna systems–nonorthogonal multiple access (PASS–NOMA), which combines the inherent physical properties of waveguide channels with the NOMA technology. The proposed system employs an adaptive pairing strategy with successive interference cancellation to increase the system’s spectral efficiency ...
Yüksel Tokur Bozkurt, Rajkishor Kumar
wiley   +1 more source

Performance Analysis of Power Allocation and User-Pairing Techniques for MIMO-NOMA in VLC Systems

Photonics
In this paper, we evaluate the performance of multiple-input multiple-output (MIMO) communication systems applied with a non-orthogonal multiple access (NOMA)-based indoor visible light communication (VLC).
Hesham S. Ibrahim, Mohamed Abaza, Ali Mansour, Ayman Alfalou   +3 more
doaj   +1 more source

Next‐Generation SIMO SC‐FDMA–DMWT Systems With Adaptive EGC: Performance Enhancement in Correlated LTE‐Advanced Channels

Journal of Control Science and Engineering, Volume 2026, Issue 1, 2026.
Given the explosive increase in mobile data traffic, the wireless communication system of today and beyond has to be able to offer both high spectral efficiency and energy efficiency (EE) under challenging propagation environments such as deep indoor, high‐speed mobility, or tunneling. This work presents an improved structure of doing SIMO SC‐FDMA–DMWT
Mohammed Aboud Kadhim, Zahraa Ibrahim Sabere, Ahmed A. Thabit, Deepali   +3 more
wiley   +1 more source

UAV-assisted cooperative downlink NOMA with virtual full-duplex operation

ICT Express, 2019
In this paper, we consider an unmanned aerial vehicle (UAV)-assisted downlink cellular network consisting of a single base station (BS), two mobile stations (MSs) with N antennas, and K UAV relay stations (RSs). We assume that there exists no direct link
Jeong Seon Yeom, Young-bin Kim, Bang Chul Jung   +2 more
doaj   +1 more source