Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Elisabeth De Carvalho"'
Publikováno v:
IEEE Access, Vol 10, Pp 60904-60913 (2022)
Low Earth orbit satellites are expected to be one of the biggest suppliers of wireless communication within the coming years. For this to happen 5G and 6G networks, are crucial to be implemented in satellite communication. This comes with the problem
Externí odkaz:
https://doaj.org/article/07957c34a8994172ba33e8b8ee9cfdea
Autor:
Cristian J. Vaca-Rubio, Pablo Ramirez-Espinosa, Kimmo Kansanen, Zheng-Hua Tan, Elisabeth De Carvalho, Petar Popovski
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 934-947 (2021)
Sensing capability is one of the most highlighted new feature of future 6G wireless networks. This paper addresses the sensing potential of Large Intelligent Surfaces (LIS) in an exemplary Industry 4.0 scenario. Besides the attention received by LIS
Externí odkaz:
https://doaj.org/article/0226280af92949a094ee1e982c1fad3d
Autor:
Jesper Odum Nielsen, Anders Karstensen, Patrick C. F. Eggers, Elisabeth De Carvalho, Gerhard Steinbock, Martin Alm
Publikováno v:
IEEE Access, Vol 8, Pp 193644-193654 (2020)
This paper analyzes the performance of well-known precoding schemes for massive multiple-input multiple-output (MMIMO) systems. The investigations are based on extensive measurements made with a sounding system capable of capturing the dynamic channe
Externí odkaz:
https://doaj.org/article/2de7e925318a47e6956c8176d87b8753
Publikováno v:
IEEE Access, Vol 6, Pp 2899-2907 (2018)
Massive MIMO is commonly described as a large number of base station (BS) antennas serving a smaller number of single-antenna users. However, adding a second antenna to the user handset opens the possibility to exploit multiplexing techniques and obt
Externí odkaz:
https://doaj.org/article/8f97e7490476475b86ea28f83fc5c3ea
Autor:
Carsten Bockelmann, Nuno K. Pratas, Gerhard Wunder, Stephan Saur, Monica Navarro, David Gregoratti, Guillaume Vivier, Elisabeth De Carvalho, Yalei Ji, Cedomir Stefanovic, Petar Popovski, Qi Wang, Malte Schellmann, Evangelos Kosmatos, Panagiotis Demestichas, Miruna Raceala-Motoc, Peter Jung, Slawomir Stanczak, Armin Dekorsy
Publikováno v:
IEEE Access, Vol 6, Pp 28969-28992 (2018)
The fifth generation of cellular communication systems is foreseen to enable a multitude of new applications and use cases with very different requirements. A new 5G multi-service air interface needs to enhance broadband performance as well as provid
Externí odkaz:
https://doaj.org/article/c302e289d8234593a8b80feee08a800d
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2017, Iss 1, Pp 1-15 (2017)
Abstract This work concerns wireless cellular networks applying time division duplexing (TDD) massive multiple-input multiple-output (MIMO) technology. Such systems suffer from pilot contamination during channel estimation, due to the shortage of ort
Externí odkaz:
https://doaj.org/article/4df903b9d6eb45819dca6dfcab8ee023
Autor:
Elisabeth de Carvalho Roeder
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFMGUniversidade Federal de Minas GeraisUFMG.
Objetivos: Avaliar o efeito sobre o traçado cardiotocografico da hidralazina venosa utilizada como droga de escolha em gestantes internadas em emergência hipertensiva. Material e Métodos: Foi realizado um estudo de coorte transversal, prospectivo,
Externí odkaz:
http://hdl.handle.net/1843/ECJS-744NU2
Publikováno v:
Williams, R J, Espinosa, P R, Yuan, J & De Carvalho, E 2022, ' Electromagnetic Based Communication Model for Dynamic Metasurface Antennas ', I E E E Transactions on Wireless Communications, vol. 21, no. 10, pp. 8616-8630 . https://doi.org/10.1109/TWC.2022.3167783
Dynamic metasurface antennas (DMAs) arise as a promising technology in the field of massive multiple-input multiple-output (mMIMO) systems, offering the possibility of integrating a large number of antennas in a limited - and potentially large - aper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b12b7b4b2e09428ce21621da59be04a
https://vbn.aau.dk/da/publications/85040164-ac8c-415e-aff0-dfad6a67a577
https://vbn.aau.dk/da/publications/85040164-ac8c-415e-aff0-dfad6a67a577
Autor:
Anay Ajit Deshpande, Cristian J. Vaca-Rubio, Salman Mohebi, Dariush Salami, Elisabeth de Carvalho, Petar Popovski, Stephan Sigg, Michele Zorzi, Andrea Zanella
Publikováno v:
Deshpande, A A, Vaca-Rubio, C J, Mohebi, S, Salami, D, Carvalho, E D, Popovski, P, Sigg, S, Zorzi, M & Zanella, A 2022, Energy-Efficient Design for RIS-assisted UAV communications in beyond-5G Networks . in 2022 20th Mediterranean Communication and Computer Networking Conference (MedComNet) ., 9810453, IEEE Communications Society, pp. 158-165, 2022 20th Mediterranean Communication and Computer Networking Conference (MedComNet), 01/06/2022 . https://doi.org/10.1109/MedComNet55087.2022.9810453
EC/H2020/813999/EU//WINDMILL The usage of Reconfigurable Intelligent Surfaces (RIS) in conjunction with Unmanned Ariel Vehicles (UAVs) is being investigated as a way to provide energy-efficient communication to ground users in dense urban areas. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a787463c5fb943c1bedc3c4899ff4dd0
https://vbn.aau.dk/ws/files/498378916/Salami_UAV_RIS.pdf
https://vbn.aau.dk/ws/files/498378916/Salami_UAV_RIS.pdf
Publikováno v:
An, Z, Zhang, T, Shen, M, Carvalho, E D, Ma, B, Yi, C & Song, T 2022, ' Series-Constellation Feature Based Blind Modulation Recognition for Beyond 5G MIMO-OFDM Systems With Channel Fading ', IEEE Transactions on Cognitive Communications and Networking, vol. 8, no. 2, pp. 793-811 . https://doi.org/10.1109/TCCN.2022.3164880
Due to the shortage of radio spectrum in the current 5G and upcoming 6G systems, the cognitive radio (CR) technique is indispensable for spectrum management and can put the unutilized spectrum to good use. As the core technology of CR, blind modulati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0545463b67d5f70aea9009288686e433
https://vbn.aau.dk/da/publications/bf77a2de-da0c-4e9a-accf-12aeb608d58f
https://vbn.aau.dk/da/publications/bf77a2de-da0c-4e9a-accf-12aeb608d58f