Mostrando ítems 61-70 de 117
Iglesias González, Rubén (Fecha de defensa: 2015-12-04)
Every year, with the onset of spring rains and snow melting, landslides represent one of the major threats to human life and infrastructures in natural environments. In this context, different surveying ...
Játiva Espinoza, René (Fecha de defensa: 2017-04-06)
Mobile subscriber positioning is an issue in permanent revision due to the new possibilities of relation that the knowledge of the position introduces, among users and an increasing number of devices. ...
Yang, Heng, 1985- (Fecha de defensa: 2019-06-11)
The research of this thesis addresses the detection and characterization of ionospheric waves and its application to traveling ionospheric disturbances (TIDs) induced by the natural events, such as ...
Raafat, Ahmed (Fecha de defensa: 2020-07-22)
The rapid growth of wireless industry opens the door to several use cases such as internet of things and device-to-device communications, which require boosting the reliability and the spectral efficiency ...
Henarejos Hernández, Pol (Fecha de defensa: 2017-07-19)
Radiocommunication systems have evolved significantly in recent years in order to meet present and future demands. Historically, time, frequency and more recently, spatial dimensions have been used to ...
Lagén Morancho, Sandra (Fecha de defensa: 2016-12-21)
The envisioned rapid and exponential increase of wireless data traffic demand in the next years imposes rethinking current cellular networks due to the available spectrum scarcity. In this regard, 3 ...
Tabares Giraldo, Jeison (Fecha de defensa: 2021-09-08)
Worldwide, the coherent technologies have revolutionized the optical communication systems, significantly increasing the capacity of the fiber channel owing to transmission of advanced modulation formats ...
Ardanuy Della, Antoni (Fecha de defensa: 2020-12-14)
This thesis aims at exploring the limits of low peak-power, low-cost, all-semiconductor, compact lidars (laser radars) for range-resolved remote sensing of atmospheric aerosols and clouds. The systems ...
Figuerola Fernández, Sergi (Fecha de defensa: 2016-01-25)
This work was developed during a period where most of the optical management and provisioning system where manual and proprietary. This work contributed to the evolution of the state of the art of optical ...
Rojas Hernández, Miguel Ángel (Fecha de defensa: 2019-11-20)
Nowadays, the growing demand for frequency-free bands for new emerging wireless technologies and fixed frequency allocation policies in the use of the radio spectrum have resulted in a saturation of the ...