Results 31 to 40 of about 2,701 (178)

Dynamic User Grouping-Based NOMA Over Rayleigh Fading Channels

open access: yesIEEE Access, 2019
With the development of wireless communications and internet of things (IoT), non-orthogonal multiple access (NOMA) has been considered as one of effective schemes to meet the rapidly growing user access requirements.
Yue Yin   +4 more
doaj   +1 more source

DRL-Assisted Resource Allocation for NOMA-MEC Offloading with Hybrid SIC

open access: yesEntropy, 2021
Multi-access edge computing (MEC) and non-orthogonal multiple access (NOMA) are regarded as promising technologies to improve the computation capability and offloading efficiency of mobile devices in the sixth-generation (6G) mobile system.
Haodong Li, Fang Fang, Zhiguo Ding
doaj   +1 more source

Coordinated Beamforming for Multi-Cell Non-Orthogonal Multiple Access-Based Spatial Modulation

open access: yesIEEE Access, 2020
This paper proposes coordinated beamforming (CB) that works over non-orthogonal multiple access (NOMA) scheme integrated with spatial modulation (SM), termed as CB NOMA-SM, to improve capacity and user fairness. User capacity, ergodic sum capacity (ESC),
Denny Kusuma Hendraningrat   +2 more
doaj   +1 more source

A Novel Downlink IM-NOMA Scheme

open access: yesIEEE Open Journal of the Communications Society, 2021
In the next generations of communication systems, resources' scarcity devolves to a more critical point as a consequence of the expected massive number of users to be served. Furthermore, the users' contradicting requirements on quality of service forces
Abdullateef Almohamad   +3 more
doaj   +1 more source

RIS Partition-Assisted Non-Orthogonal Multiple Access (NOMA) and Quadrature-NOMA with Imperfect SIC

open access: yesIEEE Transactions on Wireless Communications, 2022
Reconfigurable intelligent surface (RIS)-assisted power-domain non-orthogonal multiple access (PD-NOMA) system has emerged as a revolutionary technology to enhance the spectrum efficiency for future wireless networks. This work introduces two novel RIS systems, namely, RIS partition-assisted (RISP) PD-NOMA (RISP-PD-NOMA) and RISP-Quadrature NOMA (RISP ...
Ankita Chauhan   +2 more
openaire   +1 more source

Outage Probability analysis of Power Domain MISO-NOMA in Rayleigh Fading Channel

open access: yesSir Syed University Research Journal of Engineering and Technology, 2022
The multiple access technique of the current wireless communication system depends on the orthogonal multiple access (OMA) technique. The availability of orthogonal resources is limited in OMA and cannot support the increasing demand for a large number ...
Muhammad Ahsan Shaikh   +4 more
doaj  

The Optimization of UAV-Assisted Downlink Transmission Based on RSMA

open access: yesMathematics
Unmanned Aerial Vehicles (UAVs) provide exceptional flexibility, making them ideal for mitigating communication disruptions in disaster-affected or high-demand areas.
Lin Huang   +3 more
doaj   +1 more source

Resource Allocation in Downlink Non-Orthogonal Multiple Access (NOMA) for Future Radio Access [PDF]

open access: yes2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015
This paper investigates a new strategy for radio resource allocation applying a non-orthogonal multiple access (NOMA) scheme. It calls for the cohabitation of users in the power domain at the transmitter side and for successive interference canceller (SIC) at the receiver side.
Marie-Rita Hojeij   +3 more
openaire   +2 more sources

Non-Orthogonal Multiple Access Assisted Multi-Region Geocast

open access: yesIEEE Access, 2018
This paper proposes a novel location-based multi-group multicast framework, which is termed non-orthogonal multiple access (NOMA)-assisted multi-region geocast.
Yi Zhang   +3 more
doaj   +1 more source

Performance analysis of dual non-orthogonal multiple access technology in the Internet of things

open access: yes物联网学报, 2019
With the rapid development of many technologies such as smart city,artificial intelligence and edge computing,the future Internet of things will face the problems of massive terminal access and spectrum resource constraints.A dual non-orthogonal multiple
Dongbo LI   +4 more
doaj   +2 more sources

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