Results 81 to 90 of about 38,585 (225)

Power Efficient IRS-Assisted NOMA [PDF]

open access: yes, 2021
In this paper, we propose a downlink multiple-input single-output (MISO) transmission scheme, which is assisted by an intelligent reflecting surface (IRS) consisting of a large number of passive reflecting elements.
Wang, Jiaheng   +4 more
core  

Chronic lymphocytic leukemia revealed by a rare complication: Noma. First description from Togo

open access: yesJournal of Oral Medicine and Oral Surgery, 2019
Introduction: Noma is defined as a gangrenous ulcerative stomatitis whose starting point is endobuccal. Its exact etiology remains unknown, but many risk factors have been described (malnutrition, poor hygiene, etc.). Chronic lymphoid leukemia (LLC) is a
Bouassalo Komlan Mawabah   +4 more
doaj   +1 more source

RIS-assisted grant-free NOMA

open access: yes, 2023
This paper introduces a reconfigurable intelligent surface (RIS)-assisted grant-free non-orthogonal multiple access (GF-NOMA) scheme. To ensure the power reception disparity required by the power domain NOMA (PD-NOMA), we propose a joint user clustering ...
Eltawil, Ahmed M.   +6 more
core   +1 more source

Hybrid NOMA Assisted OFDMA Uplink Transmission [PDF]

open access: yes
Hybrid non-orthogonal multiple access (NOMA) has recently received significant research interest due to its ability to efficiently use resources from different domains and also its compatibility with various orthogonal multiple access (OMA) based legacy ...
Ding, Zhiguo, Poor, H. Vincent
core   +2 more sources

Joint MU-mMIMO-OFDM with Hybrid Beamforming System Spectral Efficiency Improvement based NOMA Technique

open access: yesJournal of Communications Software and Systems
Due to the increasing number of users and high data rate requirements for multimedia applications in fifth-generation (5G) and beyond wireless systems, it’s necessary to incorporate spectral efficient techniques to overcome the limited available re ...
Raya K. Mohammed, Nasser N. Khamiss
doaj   +1 more source

Outage Performance Improvement by Selected User in D2D Transmission and Implementation of Cognitive Radio-Assisted NOMA

open access: yesSensors, 2019
In this paper, we investigate the outage performance in secondary network of cognitive radio (CR) employing non-orthogonal multiple access (NOMA) wireless networks over Rayleigh fading channels.
Dinh-Thuan Do   +2 more
doaj   +1 more source

SIMILARITY INDICES OF A SARCOCAULESCENTE SCRUBLAND AND BROWSING GOATS DIET IN NORTHWEST MEXICO

open access: yesTropical and Subtropical Agroecosystems, 2009
The extent of vegetation used by free browsing goats on a rangeland is a practical measure to determine rangeland productivity and may be measured by the similarity indices between the botanical composition of diet and the rangeland.
José Angel Armenta-Quintana   +5 more
doaj  

Filtering rates and functional response of selected zooplankton on the bacterium Vibrio cholerae Non O1 Non O139

open access: yesTecnología y ciencias del agua, 2012
Vibrio cholerae strains frequently cause cholera outbreaks in tropical countries. It has been suggested that zooplankton play an important role in transmitting cholera from aquatic systems to their human hosts. It is also possible that zooplankton —which
Pedro Ramírez   +3 more
doaj  

Noma-assessing Knowledge and Practice Competence among Healthcare Workers in a Tertiary Hospital, Northwestern Nigeria

open access: yesJournal of Primary Care Dentistry and Oral Health
Background: Noma, otherwise known as cancrum oris, is an opportunistic infectious necrotizing disease of bacterial origin that can lead to the destruction of orofacial and surrounding structures affecting mainly children between 2 and 6 years of age.
Abubakar Mohammad Kaura   +5 more
doaj   +1 more source

Age of Information: Can CR-NOMA Help?

open access: yes, 2022
The aim of this paper is to exploit cognitive-ratio inspired NOMA (CR-NOMA) transmission to reduce the age of information in wireless networks. In particular, two CR-NOMA transmission protocols are developed by utilizing the key features of different ...
Schober, Robert   +2 more
core  

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