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pro vyhledávání: '"Mera, Carlos"'
Many textbook physical effects in crystals are enabled by some specific symmetries. In contrast to such "apparent effects", "hidden effect X" refers to the general condition where the nominal global system symmetry would disallow the effect X, wherea
Externí odkaz:
http://arxiv.org/abs/2211.09921
We present a beamforming algorithm for multiuser wideband millimeter wave (mmWave) communication systems where one access point uses hybrid analog/digital beamforming while multiple user stations have phased-arrays with a single RF chain. The algorit
Externí odkaz:
http://arxiv.org/abs/1905.03918
Akademický článek
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Autor:
Menacho, Inmaculada, Aragón, Estívaliz, Arrigoni, Flavia, Mera, Carlos, Carmen Canto, M., Navarro, Jose I.
Publikováno v:
Frontiers in Education; 2024, p1-9, 9p
The most relevant linear precoding method for frequency-flat MIMO broadcast channels is block diagonalization (BD) which, under certain conditions, attains the same nonlinear dirty paper coding channel capacity. However, BD is not easily translated t
Externí odkaz:
http://arxiv.org/abs/1608.06005
Autor:
Castro-Cabrera, Paola, Castellanos-Dominguez, G., Mera, Carlos, Franco-Marín, Luis, Orozco-Alzate, Mauricio
Publikováno v:
In Journal of Volcanology and Geothermal Research May 2021 413
Millimeter wave (mm-wave) and massive MIMO have been proposed for next generation wireless systems. However, there are many open problems for the implementation of those technologies. In particular, beamforming is necessary in mm-wave systems in orde
Externí odkaz:
http://arxiv.org/abs/1506.05143
Time-reversal (TR) is a beamforming technique for frequency-selective channels, which has received increasing attention due to its high energy efficiency and low computational complexity for wireless communications. In this paper, we present two cont
Externí odkaz:
http://arxiv.org/abs/1411.6897
Publikováno v:
Eikasía Revista de Filosofía; ene/feb2024, Issue 119, p167-207, 40p