Zobrazeno 1 - 10
of 245
pro vyhledávání: '"Marcelo S. Alencar"'
Autor:
Danilo B. T. Almeida, Marcelo S. Alencar, Rafael M. Duarte, Hugerles S. Silva, Francisco Madeiro, Waslon T. A. Lopes, Wamberto J. L. Queiroz
Publikováno v:
IEEE Access, Vol 12, Pp 35325-35336 (2024)
The cell-free (CF) systems are a key technology for future wireless networks, which exploit the scenario spatial macro-diversity to offer high channel capacity and link reliability, uniform user quality of service (QoS), and better coverage. A techni
Externí odkaz:
https://doaj.org/article/df6bd87bf1184031bc35d279dcf01624
Autor:
Higo Thaian P. Da Silva, Hugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. De Queiroz, Ugo Silva Dias
Publikováno v:
IEEE Access, Vol 11, Pp 26979-26995 (2023)
Future wireless communication systems depend on the network’s ultra-densification, on the application of massive multiple-input multiple-output (mMIMO) techniques and on the use of higher frequency bands to satisfy the ever-increasing demands for c
Externí odkaz:
https://doaj.org/article/522641d4f4f54c839e1eb6da44dc783b
Publikováno v:
IEEE Access, Vol 10, Pp 65520-65532 (2022)
Among the characteristics in fifth generation (5G) networks, a massive number of devices and a network densification stand out. Hence, efficient location management is a key factor in enabling the network to track each user under the coverage area. I
Externí odkaz:
https://doaj.org/article/306bf396a340429685982ebfda1b39a2
Autor:
P. Higo Thaian da Silva, Rafael M. Duarte, Hugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. De Queiroz
Publikováno v:
IEEE Access, Vol 10, Pp 82092-82105 (2022)
Ultra densification of the number of antennas combined with the use of large bandwidths in the millimeter wave (mmWave) spectrum is considered one of the main methodologies to achieve the quality of service requirements for future generations of wire
Externí odkaz:
https://doaj.org/article/be7bf42951374530a5f293be1f8086eb
Publikováno v:
Journal of Communications Software and Systems, Vol 17, Iss 4, Pp 358-365 (2021)
This article presents a study on the performance of different digital modulation systems in the presence of epidemic interference. This type of interference is caused by the fast increase in the number of users in a system at a given time. The epidem
Externí odkaz:
https://doaj.org/article/521b2b02b1d8413a920b8c7f1c54b68a
Publikováno v:
Journal of Communications Software and Systems, Vol 6, Iss 2, Pp 49-55 (2010)
Digital television produces video signals with different bit rates, encoding formats, and spatial resolutions. To deliver video to users with different receivers, the content needs to be dynamically adapted. Transcoding devices convert video from one
Externí odkaz:
https://doaj.org/article/8748b4e6f50a43ceb6c9fcad8617231a
Publikováno v:
International Journal of Antennas and Propagation, Vol 2011 (2011)
This paper presents mathematical expressions for the spatial correlation between elements of linear and circular antenna arrays, considering cosine, Gaussian, and Von Mises distributions, for the direction of arrival (DoA) of the electromagnetic wave
Externí odkaz:
https://doaj.org/article/c49fa273173f49408db3300c8d7094b4
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2010 (2010)
Externí odkaz:
https://doaj.org/article/e676accbcef54cbcbff0dda8c7ce5b1e
Autor:
Higo Thaian P. da Silva, Hugerles S. Silva, Marcelo S. Alencar, Wamberto J. L. Queiroz, Ugo S. Dias
Publikováno v:
2022 Workshop on Communication Networks and Power Systems (WCNPS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f260b0e692e8b6b7378cb6a0ec7fc597
https://doi.org/10.1109/wcnps56355.2022.9969765
https://doi.org/10.1109/wcnps56355.2022.9969765
