Results 11 to 20 of about 16,015,285 (164)

Non orthogonal multiple access with wind energy harvesting

Alexandria Engineering Journal, 2023
In this paper, we derive the performance of wireless communications using wind energy harvesting. We study the single-user and multi-user scenarios using Non Orthogonal and Orthogonal Multiple Access (NOMA and OMA).
Raed Alhamad, Hatem Boujemaa
doaj   +2 more sources

Dynamic non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA) in 5G wireless networks [PDF]

, 2019
In this paper, a novel dynamic multiple access technology selection among orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) techniques is proposed.
Walid Saad (2308132), Saeedeh Parsaeefard (7207586), Mahsa Derakhshani (2572993), Mina Baghani (7212098)   +3 more
core   +7 more sources

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

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

Hybrid Cooperative Spectrum Sharing Protocols Based on OMA and NOMA in Cognitive Radio Networks

Applied Sciences, 2022
In cognitive radio networks (CRNs), the performance of the primary users (PUs) may suffer adverse effects from the secondary users (SUs) if the spectrum of PUs is haphazardly shared with SUs.
Suoping Li, Hongli Li, Qian Yang, Jaafar Gaber   +3 more
doaj   +1 more source

Rate-Splitting-Based Generalized Multiple Access for Band-Limited Multi-User VLC

Photonics, 2023
In this paper, we propose a rate-splitting-based generalized multiple access (GMA) scheme for band-limited multi-user visible light communication (VLC) systems.
Yuru Tang, Chen Chen, Min Liu, Pengfei Du, H. Y. Fu   +4 more
doaj   +1 more source

Ieee Access Special Section Editorial: Advances in Signal Processing for Non-Orthogonal Multiple Access

IEEE Access, 2020
Orthogonal multiple access (OMA) technologies have prevailed from the first-generation (1G) to the fourth-generation (4G) of modern mobile communications, primarily because of their low complexity.
Miaowen Wen, Zhiguo Ding, Ertugrul Basar, Yuanwei Liu, Fuhui Zhou, Ioannis Krikidis, Mojtaba Vaezi, H. Vincent Poor   +7 more
doaj   +1 more source

Performance analysis of cooperative cognitive radio networks based on hybrid NOMA/OMA and best relay selection

IET Communications, 2022
In non‐orthogonal multiple access (NOMA) systems, it may not be advisable to send the superimposed signal of all users to individual users with retransmission requirements during the retransmission phase.
Suoping Li, Wenwu Liang, Qianyu Xu, Nana Yang, Kejun Jia   +4 more
doaj   +1 more source

Comments on SIC Design for SISO NOMA Systems Over Doubly Selective Channels

IEEE Open Journal of Vehicular Technology, 2022
Non-orthogonal multiple access principle applied in power domain (power-domain NOMA) enhances spectrum efficiency and connectivity of mobile communication systems through sharing between Orthogonal Multiple Access (OMA) and other multiple users.
Valeri Kontorovich
doaj   +1 more source

Throughput analysis of non-orthogonal multiple access and orthogonal multiple access assisted wireless energy harvesting K-hop relaying networks [PDF]

, 2023
This study introduces the non-orthogonal multiple access (NOMA) technique into the wireless energy harvesting K-hop relay network to increase throughput.
Nguyen, Nhat-Tien, Phung Ton That, Ha, Duy-Hung, Miroslav Voznak, Voznak, Miroslav, Duy-Hung Ha, That, Phung Ton, Nhat-Tien Nguyen   +7 more
core   +1 more source