Sökning: "channel modeling"
Visar resultat 41 - 45 av 160 avhandlingar innehållade orden channel modeling.
41. Modeling and Compensation of Polarization Effects in Fiber-Optic Communication Systems
Sammanfattning : Optical communication systems that exploit the orthogonality between two polarizations of light convey information over optical fibers by modulating data over the two polarizations. In an idealized scenario, the two polarizations propagate through the fiber without interfering. LÄS MER
42. Geometry-based Radio Channel Characterization and Modeling: Parameterization, Implementation and Validation
Sammanfattning : The propagation channel determines the fundamental basis of wireless communications, as well as the actual performance of practical systems. Therefore, having good channel models is a prerequisite for developing the next generation wireless systems. This thesis first investigates one of the main channel model building blocks, namely clusters. LÄS MER
43. Modeling multiple antenna systems in realistic environments - a composite channel approach
Sammanfattning : For evaluation of specific antenna arrangements in wireless communication systems we need physical channel models that take into account the directional domain. Here we propose a practical approach to wireless channel modeling in, particularly, mobile communication systems, by using an assumption that the channel can be divided into separate parts or regions that can be treated and modeled individually. LÄS MER
44. Development of an Improved Thermal-Hydraulic Modeling of the Jules Horowitz Reactor
Sammanfattning : The newest European high performance material testing reactor, the Jules Horowitz Reactor, is under construction at CEA Cadarache research center in France. The reactor will support existing and future nuclear reactor technologies, with the first criticality expected at the end of this decade. LÄS MER
45. Silicon Germanium heterojunction bipolar transistors : Large-signal modeling and low-frequency noise characterization aspects
Sammanfattning : In this thesis, aspects of the Silicon Germanium (SiGe) Heterojunction Bipolar Transistor (HBT) are addressed. A physics-based electrical large-signal model including thermal dependence has been developed and is implemented using a commercially available simulator package. LÄS MER