Results 31 to 40 of about 52,362 (300)

High Reliable Uplink Transmission Methods in GEO–LEO Heterogeneous Satellite Network

Applied Sciences, 2023
As a significant component of non-terrestrial networks, satellite communication has gradually evolved into a heterogeneous topology where the network nodes are classified as low Earth orbit (LEO) and geostationary Earth orbit (GEO) nodes. Considering the
Guoyan Li, Tian Li, Xinwei Yue, Tianwei Hou, Bin Dai   +4 more
doaj   +1 more source

Feasibility analysis of non-orthogonal waveforms for multiple input multiple output passive radar application

The Journal of Engineering, 2019
New non-orthogonal multiple access technology is proposed with the development of 5G, which is expected to support higher spectrum efficiency and massive terminal access, it enables the communication system to achieve better bit error rate performance ...
Qing Wang, Tong Li, Tongdong Dou, Weifeng Zhu   +3 more
doaj   +1 more source

Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access [PDF]

IEEE Communications Letters, 2016
Non-orthogonal multiple access (NOMA) has been recognized as a promising technique for providing high data rates in 5G systems. This letter is to study physical layer security in a single-input single-output (SISO) NOMA system consisting of a transmitter, multiple legitimate users and an eavesdropper.
Zhang, Yi, Wang, Hui-Ming, Yang, Qian, Ding, Zhiguo   +3 more
openaire   +3 more sources

Downlink Non-Orthogonal Multiple Access With Limited Feedback

IEEE Transactions on Wireless Communications, 2017
In this paper, we analyze downlink non-orthogonal multiple access (NOMA) networks with limited feedback. Our goal is to derive appropriate transmission rates for rate adaptation and minimize outage probability of minimum rate for the constant-rate data service, based on distributed channel feedback information from receivers.
Xiaoyi Liu, Hamid Jafarkhani
openaire   +5 more sources

Non-Orthogonal Multiple Access in Large-Scale Heterogeneous Networks [PDF]

IEEE Journal on Selected Areas in Communications, 2017
In this paper, the potential benefits of applying non-orthogonal multiple access (NOMA) technique in $K$-tier hybrid heterogeneous networks (HetNets) is explored. A promising new transmission framework is proposed, in which NOMA is adopted in small cells and massive multiple-input multiple-output (MIMO) is employed in macro cells.
Yuanwei Liu, Zhijin Qin, Maged Elkashlan, Arumugam Nallanathan, Julie A. McCann   +4 more
openaire   +5 more sources

Joint time and beam domain non-orthogonal multiple access

Tongxin xuebao, 2021
In order to improve the system’s ability to accommodate connected devices, a joint time and beam domain non-orthogonal multiple access (NOMA) scheme was proposed, which was suitable for millimeter wave massive multiple-input multiple-output (MIMO ...
Zhaoyang ZHANG, Jiajia WU, Jue WANG, Chu ZHOU   +3 more
doaj   +2 more sources

Exploiting Incremental Virtual Full Duplex Non-Orthogonal Multiple Access Systems

Information, 2022
This paper investigates the throughput performance of an incremental virtual full-duplex non-orthogonal multiple access (I-VFD-NOMA) communication system, where two energy harvesting (EH) enabled near users are willing to forward message for far user ...
Weidong Guo
doaj   +1 more source

Non‐orthogonal multiple access schemes with partial relay selection [PDF]

IET Communications, 2017
Non‐orthogonal multiple access (NOMA) in amplify‐and‐forward relay systems with partial relay selection (PRS) is investigated. More specifically, new exact closed‐form expressions for the outage probabilities at two users are derived, based on which an asymptotic analysis at high signal‐to‐noise ratio (SNR) is carried out.
Lee, Sunyoung, da Costa, Daniel Benevides, Vien, Quoc-Tuan, Duong, Trung Q., de Sousa Jr, Rafael Timoteo   +4 more
openaire   +4 more sources

Controlled Power Cooperative Non Orthogonal Multiple Access Relay Networks

Electrica
Recent work related to cooperative communication and power allocation has attracted much attention among researchers. This paper compares orthogonal multiple access (OMA), non orthogonal multiple access (NOMA), and cooperative NOMA.
Mario Ligwa, Vipin Balyan
doaj   +1 more source

UAV-Enabled Wireless Backhaul Networks Using Non-Orthogonal Multiple Access

IEEE Access, 2021
Owing to their potential mobility and agility, unmanned aerial vehicles (UAVs) have captured predominant interests in sustaining 5G wireless communication and beyond. In this paper, we scrutinize the downlink transmission of UAV-enabled wireless backhaul
Nadia Iradukunda, Quoc-Viet Pham, Ming Zeng, Hee-Cheol Kim, Won-Joo Hwang   +4 more
doaj   +1 more source