Results 11 to 20 of about 2,701 (178)

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

IET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh, Khaled F. Hayajneh, Haythem Bany Salameh, Raed Al Athamneh, Yaser Jararweh   +4 more
wiley   +1 more source

Joint Sensor Clustering and Power Allocation in Wireless Body Area Networks Based on NOMA. [PDF]

Healthc Technol Lett
This paper addresses an optimization problem for the NOMA assisted wireless body area networks. A joint sensor clustering and power allocation algorithm is proposed to maximize the system sum throughput. ABSTRACT With the transformation of modern medical care towards a prevention‐centred model and the growing demand for high‐density sensor deployments ...
Deng D, Liu D, Li J.
europepmc   +2 more sources

Non-Orthogonal Multiple Access (NOMA) for Underwater Acoustic Communication [PDF]

2018 IEEE 88th Vehicular Technology Conference (VTC-Fall), 2018
In this paper we investigate the application of the non-orthogonal multiple access (NOMA) technique for multiuser underwater acoustic (UWA) communication. The NOMA scheme can be implemented using either orthogonal frequency division multiplexing (OFDM) or filterbank multicarrier (FBMC) modulation for waveform shaping.
Mohammud Junaid Bocus, Dimitris Agrafiotis, Angela Doufexi   +2 more
openaire   +2 more sources

A Survey on Non-Orthogonal Multiple Access: From the Perspective of Spectral Efficiency and Energy Efficiency

Energies, 2020
Non-orthogonal multiple access (NOMA) is a promising technology for next-generation wireless networks with emerging demands on low latency, high throughput, and massive connectivity.
Hieu V. Nguyen, Hyeon Min Kim, Gil-Mo Kang, Kha-Hung Nguyen, Van-Phuc Bui, Oh-Soon Shin   +5 more
doaj   +1 more source

On the Comparison of Optimal NOMA and OMA in a Paradigm Shift of Emerging Technologies

IEEE Access, 2022
Non-orthogonal multiple access (NOMA) is a better multiple access technique than orthogonal multiple access (OMA), precisely orthogonal frequency division multiple access (OFDMA) scheme, at the conceptual level for fifth-generation (5G) networks and ...
Joydev Ghosh, In-Ho Ra, Saurabh Singh, Huseyin Haci, Khaled A. Al-Utaibi, Sadiq M. Sait   +5 more
doaj   +1 more source

A New Green Prospective of Non-orthogonal Multiple Access (NOMA) for 5G [PDF]

Information, 2020
Energy efficiency is a major concern in the emerging mobile cellular wireless networks since massive connectivity is to be expected with high energy requirements from the network operators. Non-orthogonal multiple access (NOMA) being the frontier multiple access scheme for 5G, there exists numerous research attempts on enhancing the energy efficiency ...
Vishaka Basnayake, Dushantha Nalin K. Jayakody, Vishal Sharma 0001, Nikhil Sharma 0002, P. Muthuchidambaranathan, Hakim Mabed   +5 more
openaire   +3 more sources

Multi-Carrier Waveforms and Multiple Access Strategies in Wireless Networks: Performance, Applications, and Challenges

IEEE Access, 2022
Current generation mobile communications require high-quality services. Adopting multiple access (MA) and multi-carrier waveforms potentially enhances the quality of services offered to end-users.
Tewelgn Kebede, Yihenew Wondie, Johannes Steinbrunn, Hailu Belay Kassa, Kevin T. Kornegay   +4 more
doaj   +1 more source

Analisis Performansi Multi User Detection pada Kanal NLOS untuk Sistem NOMA-VLC

Jurnal Elkomika, 2021
ABSTRAK Non-orthogonal multiple access (NOMA), mulai diteliti untuk dapat digunakan sebagai teknik multiple access yang efektif pada jaringan 5G karena teknik ini dapat menghemat bandwidth modulasi.
BIMA SURYA PRATAMA, NACHWAN MUFTI ADRIANSYAH, BRIAN PAMUKTI   +2 more
doaj   +1 more source

Decoupling Cascaded Multilevel HetNet OMA and NOMA Schemes and Performance Comparison [PDF]

Jisuanji gongcheng, 2019
To address the imbalance problem of Uplink(UL) and Downlink(DL) in Heterogeneous Network(HetNet),we study a multilevel HetNet which combines Dual-Connectivity(DC),Decoupled UL and DL Association(DUDA),and propose a DUDA-DC Non-Orthogonal Multiple Access ...
FAN Qiaoling, JIA Xiangdong, CHEN Yuwan, XU Wenjuan
doaj   +1 more source

BER Performance for Downlink NOMA

Wasit Journal of Engineering Sciences, 2022
Non-Orthogonal Multiple Access (NOMA) is a possible multiple access option for the coming generation of wireless communications that has a higher SE and takes advantage of network resource reuse.
Tabarek Hussein, Ismael Sharhan Haburi
doaj   +1 more source