Zobrazeno 1 - 10
of 364
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
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
Autor:
César Benavente-Peces, Diego V. Queiroz, Iguatemi E. Fonseca, Ruan Delgado Gomes, Marcelo S. Alencar
Publikováno v:
Journal of Ambient Intelligence and Humanized Computing. 14:6043-6062
Recent advances in wireless sensor networks, especially in industry (IWSN), have brought important improvements to deploy a sensor network in such environments. However, there is a high interference level, noise, shadowing, and multipath fading, caus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2b40bd673583cee8115cf8878ecea23
https://doi.org/10.1007/s12652-020-02741-1
https://doi.org/10.1007/s12652-020-02741-1
Autor:
Esmael Caliman Filho, Rafael A. Vieira, Tulio Freitas Simões de Castro, Luiz Fernando Taboada Gomes Amaral, Osmar Pinto Oliveira Junior, Marcelo S. Alencar
Publikováno v:
Brazilian Journal of Development. 7:27520-27528
Este artigo introduz o conceito de interferencia epidemica, para determinar o efeito do acesso intempestivo de usuarios ao sistema de comunicacoes moveis celulares em redes 5G, causando aumento na probabilidade de erro do canal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::829921f5fb7d4959dd84179c6543b54f
https://doi.org/10.34117/bjdv7n3-452
https://doi.org/10.34117/bjdv7n3-452
Autor:
Iguatemi E. Fonseca, Francisco Madeiro, Danilo Brito Teixeira de Almeida, Wamberto J. L. Queiroz, Hugerles S. Silva, Marcelo S. Alencar
Publikováno v:
Wireless Networks. 26:4529-4542
In this paper, an upper bound on the symbol error probability (SEP) of the M-ary $$\theta $$-quadrature amplitude modulation scheme, in a channel subject to additive white Gaussian noise (AWGN) and $$\eta -\mu $$ fading, is calculated by means of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa847723567e096e495c081c91f4b3e9
https://doi.org/10.1007/s11276-020-02346-8
https://doi.org/10.1007/s11276-020-02346-8