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https://hdl.handle.net/1889/3598
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DC Field | Value | Language |
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dc.contributor.advisor | Colavolpe, Giulio | - |
dc.contributor.author | Ricciulli, Michelangelo | - |
dc.date.accessioned | 2018-05-07T13:31:44Z | - |
dc.date.available | 2018-05-07T13:31:44Z | - |
dc.date.issued | 2018-03-14 | - |
dc.identifier.uri | http://hdl.handle.net/1889/3598 | - |
dc.description.abstract | In this thesis, after a short overview of information theoretic results, we show improvements in reliability, efficiency, and coverage in three different scenarios of satellite communications. First, we present a solution that could improve speed or reliability in broadcast and unicast satellite connections. It is based on the idea that two (or more) neighbor users could cooperate using a side-channel to exchange information about the received signals. Different possible schemes are derived and analyzed. To make it more realistic, we used the hypothesis that the side-channel has not an infinite capacity but it is constrained to a maximum fixed information rate that could pass through it. The second scenario is about Earth observation satellites. A suitable scheme for both transmitters and receivers is found, describing the improvements in spectral efficiency through the use of a signal predistorter and optimization of the transmission parameters. Moreover, we discuss the benefits of advanced low-complexity receivers. The last scenario, describes a way to extend the coverage of Internet of Things (IoT) networks in areas far from the gateway, through a Low Earth Orbit (LEO) satellite. The study is based on a proprietary IoT protocol called LoRa, designed to be used on Earth. We describe the main properties of the LoRa modulation and propose a receiver scheme that could allow the reception of LoRa signals on a LEO satellite scenario, where Doppler effects can be detrimental. | it |
dc.language.iso | Inglese | it |
dc.publisher | Università di Parma. Dipartimento di Ingegneria e Architettura | it |
dc.relation.ispartofseries | Dottorato di ricerca in Tecnologie dell'informazione | it |
dc.rights | © Michelangelo Ricciulli, 2018 | it |
dc.subject | DVB-S2X | it |
dc.subject | spectral efficiency | it |
dc.subject | LoRa | it |
dc.subject | Earth observation | it |
dc.subject | Cooperative receivers | it |
dc.subject | quantization | it |
dc.title | Advanced transceivers for satellite communications | it |
dc.type | Doctoral thesis | it |
dc.subject.miur | ING-INF/03 | it |
Appears in Collections: | Tecnologie dell'informazione. Tesi di dottorato |
Files in This Item:
File | Description | Size | Format | |
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RelazioneFinaleRicciulli.pdf Until 2100-01-01 | Relazione sul triennio | 72.59 kB | Adobe PDF | View/Open Request a copy |
TesiDottoratoRicciulli_rev.pdf | Tesi di Dottorato | 2.08 MB | Adobe PDF | View/Open |
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