Results 31 to 40 of about 27,923 (259)

Uplink power control scheme for spectral efficiency maximization in NOMA systems

Alexandria Engineering Journal, 2023
Non-orthogonal multiple access (NOMA) has recently gained much research attention as a possible multiple access solution for fifth-generation (5G) wireless communication. The NOMA can further enhance spectral performance compared with orthogonal multiple
Bilal Ur Rehman, Mohammad Inayatullah Babar, Gamil Abdel Azim, Muhammad Amir, Hesham Alhumyani, Mohammed S. Alzaidi, Majid Alshammari, Rashid Saeed   +7 more
doaj   +1 more source

Non-Orthogonal Multiple Access (NOMA) for Downlink Multiuser MIMO Systems: User Clustering, Beamforming, and Power Allocation [PDF]

IEEE Access, 2016
We investigate the application of non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC) in downlink multiuser multiple-input multiple-output (MIMO) cellular systems, where the total number of receive antennas at user ...
Shipon Ali, E. Hossain, Dong In Kim
semanticscholar   +1 more source

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

Joint Power Allocation and Beamforming for Non-Orthogonal Multiple Access (NOMA) in 5G Millimeter Wave Communications [PDF]

IEEE Transactions on Wireless Communications, 2017
In this paper, we explore non-orthogonal multiple access (NOMA) in millimeter-wave (mm-wave) communications (mm-wave-NOMA). In particular, we consider a typical problem, i.e., maximization of the sum rate of a 2-user mm-wave-NOMA system. In this problem,
Zhenyu Xiao, Lipeng Zhu, Jinho Choi, Pengfei Xia, X. Xia   +4 more
semanticscholar   +1 more source

Spectral and Energy Efficient Spatially Modulated Non-Orthogonal Multiple Access (NOMA) For 5G [PDF]

The Journal of Korean Institute of Communications and Information Sciences, 2015
Mohammad Irfan, Jin Woo Kim, Soo Young Shin   +2 more
openalex   +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