Results 11 to 20 of about 43,825 (303)
Power Allocation and User Grouping for NOMA Downlink Systems
Applied Sciences (Switzerland), 2023 Non-orthogonal multiple access (NOMA) technology allows multiple users to use the same time-frequency resource to send signals, which can improve spectral efficiency and throughput.
Tong Gao, Wenjing Zheng, Fei Lin
exaly +4 more sources
Joint user grouping and power control using whale optimization algorithm for NOMA uplink systems [PDF]
PeerJ Computer Science, 2022 The non-orthogonal multiple access (NOMA) scheme has proven to be a potential candidate to enhance spectral potency and massive connectivity for 5G wireless networks.
Bilal ur Rehman +7 more
doaj +5 more sources
User grouping and power allocation algorithm for UAV-aided NOMA network [PDF]
Tongxin xuebao, 2020 To improve the transmission flexibility of emergency communication scenarios,a joint user grouping and power allocation algorithm was proposed for UAV-aided non-orthogonal multiple access (NOMA) system.A sum-rate maximization resource allocation ...
Guoquan LI +4 more
doaj +6 more sources
Overlapping User Grouping in IoT Oriented Massive MIMO Systems
IEEE Access, 2017 This paper considers network capacity and user coverage improvement in Internet of Things (IoT)-oriented massive MIMO systems. In the literature, user grouping approaches have been used in massive MIMO to improve the network capacity, where users are ...
Run Tian, Yuan Liang, Xuezhi Tan
exaly +3 more sources
IEEE Access, 2016 Blind interference alignment (BIA) can greatly improve the degree of freedom with the infinite signal-to-noise ratio (SNR) assumption. Under the finite SNR condition, noise accumulation can have a significantly negative impact on SNR, inducing severe ...
Qing Yang +4 more
doaj +2 more sources
User Grouping, Precoding Design, and Power Allocation for MIMO-NOMA Systems
Mathematics, 2023 In this paper, we study user grouping, precoding design, and power allocation for multiple-input multiple-output (MIMO) nonorthogonal multiple access (NOMA) systems.
Byungjo Kim, Jae-Mo Kang
doaj +2 more sources
5G NOMA user grouping using discrete particle swarm optimization approach [PDF]
, 2021 Non-orthogonal multiple access (NOMA) technology meets the increasing demand for high-seed cellular networks such as 5G by offering more users to be accommodated at once in accessing the cellular and wireless network.
Azizan, Azizul; Universiti Teknologi Malaysia +5 more
core +2 more sources
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 +7 more
doaj +1 more source
Context-based user grouping for multi-casting in heterogeneous radio networks [PDF]
Advances in Radio Science, 2011 Along with the rise of sophisticated smartphones and smart spaces, the availability of both static and dynamic context information has steadily been increasing in recent years.
C. Mannweiler +3 more
doaj +1 more source
On the optimal user grouping in NOMA system technology [PDF]
EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2019 This paper provides a state-of-art analysis of the most relevant studies on optimal user-aggregation strategiesfor non-orthogonal multiple access (NOMA) technology.
Antonino Masaracchia +2 more
doaj +1 more source