Results 31 to 40 of about 91,357 (154)

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

Multiple Access in Aerial Networks: From Orthogonal and Non-Orthogonal to Rate-Splitting

IEEE Open Journal of Vehicular Technology, 2020
Recently, interest on the utilization of unmanned aerial vehicles (UAVs) has aroused. Specifically, UAVs can be used in cellular networks as aerial users for delivery, surveillance, rescue search, or as an aerial base station (aBS) for communication with
Wael Jaafar, Shimaa Naser, Sami Muhaidat, Paschalis C. Sofotasios, Halim Yanikomeroglu   +4 more
doaj   +1 more source

Optimizing sum rates in IoT networks: A novel IRS-NOMA cooperative system

ICT Express
Intelligent Reflecting Surfaces (IRS) offer a promising solution for enhancing sum rates in wireless networks by dynamically adjusting signal reflections to optimize propagation paths.
Mukkara Prasanna Kumar, Ammar Summaq, Sunil Chinnadurai, Poongundran Selvaprabhu, Vinoth Babu Kumaravelu, Md. Abdul Latif Sarker, Dong Seog Han   +6 more
doaj   +1 more source

Non-Orthogonal Multiple Access Technology for 5G Systems

Dianxin kexue, 2015
To meet the 5G requirements on spectral efficiency and number of connections，non-orthogonal multiple access（NMA）technology is becoming an important candidate technology.It was shed light on how NMA can be used to further improve spectral efficiency over ...
Qi Bi, Lin Liang, Shan Yang, Peng Chen
doaj   +2 more sources