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MIMO millimeter-wave channel estimation using coalitional games
(CEUR-WS, 2018)
In millimeter-wave massive multiple input multiple output (MIMO) antenna systems, channel estimation is a crucial component. In this paper, we propose a virtual channel representation channel estimation method us-ing ...
Novel multilayer extreme learning machine as a massive MIMO receiver for millimeter wave communications
(IEEE, 2022)
Wireless communication systems working in millimeter-wave (mmWave) frequency bands offer higher bandwidths than traditional radio frequency schemes. This technology allows multibeam steering and data multiplexing with the ...
Artificial neural network performance evaluation for a hybrid power domain orthogonal/non-orthogonal multiple access (OMA/NOMA) system
(Association for Computing Machinery, Inc, 2020)
Next-generation wireless technologies face considerable challenges in terms of providing the required latency and connectivity for new heterogeneous mobile networks. Driven by these problems, this study focuses on increasing ...
Tecnología de modulación en el espacio de tiempo-frecuencia ortogonal
(2021-02-11)
La presente investigación bibliográfica recopila los conceptos básicos de la tecnología de modulación en el Espacio de Tiempo-Frecuencia Ortogonal (OTFS), que será utilizada para la comunicación móvil de quinta generación ...
Wireless-Powered Full-Duplex UAV Relay Networks over FTR Channels
(2021-01-01)
A thorough understanding of fundamental limits of wireless-powered unmanned aerial vehicle (UAV) relay networks in millimeter waves is still missing. We narrow this gap by investigating the outage performance of a UAV-assisted ...
Resistência em fadiga cíclica de instrumentos reciprocantes fabricados com ligas de niquel-titânio submetidas a diferentes tratamentos térmicos
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIAS ODONTOLÓGICAS, 2019-09-06)
Objectives: This study aimed to evaluate and compare the resistance in cyclic fatigue of three
types of single file reciprocating systems: WaveOne Gold Primary (25 / 0.07), WA1 file (25 /
0.07) and X1 Blue (25 / 0.06), ...
Optimizing Spectral Efficiency with Massive MIMO Systems for 5G NR Mobile Networks
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2020-12)
The fifth-generation (5G) of mobile communications defines two main operating bands: The frequency band below 6 GHz (sub-6 GHz), where the pilot contamination phenomenon limits the spectral efficiency, and the millimeter-wave ...