This thesis focuses on the energy efficiency in wireless networks under
the transmission and information diffusion points of view. In particular,
on one hand, the communication efficiency is investigated,
attempting to reduce the consumption during transmissions, while on
the other hand the energy efficiency of the procedures required to distribute
the information among wireless nodes in complex networks is
taken into account.
For what concerns energy efficient communications, an innovative
transmission scheme reusing source of opportunity signals is introduced.
This kind of signals has never been previously studied in literature
for communication purposes. The scope is to provide a way for
transmitting information with energy consumption close to zero. On
the theoretical side, starting from a general communication channel
model subject to a limited input amplitude, the theme of low power
transmission signals is tackled under the perspective of stating sufficient
conditions for the capacity achieving input distribution to be
discrete.
Finally, the focus is shifted towards the design of energy efficient
algorithms for the diffusion of information. In particular, the endeavours
are aimed at solving an estimation problem distributed over a
wireless sensor network. The proposed solutions are deeply analyzed
both to ensure their energy efficiency and to guarantee their robustness
against losses during the diffusion of information (against information
diffusion truncation more in general).
| Identifer | oai:union.ndltd.org:unibo.it/oai:amsdottorato.cib.unibo.it:7021 |
| Date | 22 May 2015 |
| Creators | Zambianchi, Vincenzo <1987> |
| Contributors | Dardari, Davide |
| Publisher | Alma Mater Studiorum - Università di Bologna |
| Source Sets | Università di Bologna |
| Language | English |
| Detected Language | English |
| Type | Doctoral Thesis, PeerReviewed |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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