Essays about: "Wave propagation models"
Showing result 1 - 5 of 26 essays containing the words Wave propagation models.
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1. Parabolic equation models simulating LoS MIMO conditions
University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Abstract : This thesis explores and develops a simulation model for Line of Sight(LoS) Multiple-Input Multiple-Output (MIMO) systems in complex environments. The focus will be on implementing a 2 × 2-MIMO system in order to study phase differences of the received signals. READ MORE
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2. Synthesizing of brain MRE wave data
University essay from KTH/Medicinsk avbildningAbstract : Magnetic resonance elastography (MRE) is an imaging technique that allows for non-invasive access to the physical properties of body tissues. MRE has great potential, but it is difficult to conduct research due to the time-consuming estimation of stiffness maps, which could be speeded up by using neural network. READ MORE
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3. Evaporation Duct Modelling for a Wave-Propagation Simulator
University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Abstract : Long-range communication proves to be a challenge due to the Earth’s curvature, since electromagnetic waves propagate away from the Earth’s surface in a free atmosphere. A possible solution to beyond line-of-sight communication is the atmospheric phenomenon known as the evaporation duct. READ MORE
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4. Presence detection by means of RF waveform classification
University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknikAbstract : This master thesis investigates the possibility to automatically label and classify radio waves for presence detection, where the objective is to obtain information about the number of people in a room based on channel estimates. Labeling data for machine learning is time consuming and tedious process. To address this two approaches are evaluated. READ MORE
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5. An evaluation of coverage models for LoRa
University essay from Jönköping University/JTH, Avdelningen för datateknik och informatikAbstract : LoRaWAN is a wireless network technology based on the LoRa modulation technology. When planning such a network, it is important to estimate the network’s coverage, which can be done by calculating path loss. To do this, one can utilize empirical models of radio wave propagation. READ MORE