Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Sergio Vidal Beltrán"'
Publikováno v:
Nova Scientia, Vol 9, Iss 19 (2017)
Para la frecuencia de 2.1 GHz, los modelos de propagación utilizados para estimar la atenuación de la señal en sistemas de comunicaciones móviles celulares LTE (Long Term Evolution), son principalmente el Modelo Xia-Bertoni y Walfisch-Bertoni [2,
Externí odkaz:
https://doaj.org/article/92d5af81347949009442f78c3d8ce2aa
Publikováno v:
Revista de Matemática: Teoría y Aplicaciones, Vol 14, Iss 1, Pp 101-104 (2009)
We exhibit a trigonometric identity wich implies a link between the kernels of Dirichlet and Fejér.
Externí odkaz:
https://doaj.org/article/a25a15a94ee24704ad7438cc33e4b72f
Autor:
David Ibáñez‐Camarillo, Fernando Martínez‐Piñón, Moisés Vicente Márquez‐Olivera, Viridiana Gudelia Hernández‐Herrera, Sergio Vidal‐Beltrán
Publikováno v:
Electronics Letters, Vol 59, Iss 18, Pp n/a-n/a (2023)
Abstract It is shown experimentally a new digital optical decoding scheme based on the transmission or polarized light at p polarization planes using a K‐Nearest Neighbour (KNN) algorithm through a single‐mode optical fibre at 633 nm. The optical
Externí odkaz:
https://doaj.org/article/62eef0441a534f98853dc5cf57b231a7
Publikováno v:
IEEE Latin America Transactions. 19:1754-1762
In recent years SCMA has been proposed as a strong candidate to perform as access technique for fifth-generation mobile communications systems; usually for the uplink, bit pairs are mapped directly to code words and MPA is used in the receiver. In th
Publikováno v:
IEEE Latin America Transactions. 17:1843-1848
This work puts together two technologies that are in the interest of the scientific community, on the one hand, access methods for fifth generation systems of mobile communications, in this case Sparse Code Multiple Access (SCMA), and on the other ha
Publikováno v:
Electronics Letters. 56:1091-1093
In the fifth-generation mobile communications networks, several resource allocation techniques have been used, such as static allocation and dynamic algorithms (greedy or matching theory); this work proposes a new subcarrier allocation scheme based o
Publikováno v:
Applied Mathematics & Information Sciences. 12:1177-1182
Publikováno v:
Mathematics
Volume 9
Issue 6
Mathematics, Vol 9, Iss 651, p 651 (2021)
Volume 9
Issue 6
Mathematics, Vol 9, Iss 651, p 651 (2021)
The Third Generation Partnership Project (3GPP) and the International Telecommunication Union (ITU) identified the technical requirements that the fifth generation of mobile communications networks (5G) had to meet
within these parameters are th
within these parameters are th
Publikováno v:
International Journal of Computational Intelligence and Applications. 20
Recently, technologies based on neural networks (NNs) and deep learning have improved in different areas of Science such as wireless communications. This study demonstrates the applicability of NN-based receivers for detecting and decoding sparse cod
Autor:
Ismael Santiago Rivera, José Luis López Bonilla, Fernando Martínez Piñón, Sergio Vidal Beltrán
Publikováno v:
2018 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC).
In this paper, an in-depth description of the construction and representation of the CodeBooks for Sparse Code Multiple Access systems is shown. Subsequently the CodeWords are transmitted in a wireless channel affected by different SNR, to verify the