Inlämning av Examensarbete / Submission of Thesis

Geletu Biruk Silase , pp. 58. ING/School of Engineering, 2011.

The work

Författare / Author: Geletu Biruk Silase
Titel / Title: Modeling the Behavior of an Electronically Switchable Directional Antenna for Wireless Sensor Networks
Abstrakt Abstract:

Reducing power consumption is among the top concerns in Wireless Sensor Networks, as the lifetime of a Wireless Sensor Network depends on its power consumption. Directional antennas help achieve this goal contrary to the commonly used omnidirectional antennas that radiate electromagnetic power equally in all directions, by concentrating the radiated electromagnetic power only in particular directions. This enables increased communication range at no additional energy cost and reduces contention on the wireless medium.

The SPIDA (SICS Parasitic Interference Directional Antenna) prototype is one of the few real-world prototypes of electronically switchable directional antennas for Wireless
Sensor Networks. However, building several prototypes of SPIDA and conducting real-world experiments using them may be expensive and impractical. Modeling SPIDA based on real-world experiments avoids the expenses incurred by enabling simulation of large networks equipped with SPIDA. Such a model would then allow researchers to develop new algorithms and protocols that take advantage of the provided
directional communication on existing Wireless Sensor Network simulators.

In this thesis, a model of SPIDA for Wireless Sensor Networks is built based on thoroughly designed real-world experiments. The thesis builds a probabilistic model that accounts for variations in measurements, imperfections in the prototype construction, and fluctuations in experimental settings that affect the values of the measured metrics. The model can be integrated into existing Wireless Sensor Network simulators to foster the research of new algorithms and protocols that take advantage of directional communication. The model returns the values of signal strength and packet reception rate
from a node equipped with SPIDA at a certain point in space given the two-dimensional distance coordinates of the point and the configuration of SPIDA as inputs.

Ämnesord / Subject: Telekommunikation - Telecommunications
Elektroteknik - Electrotechnology
Mathematics\Probability and Statistics
Nyckelord / Keywords: Wireless Sensor Networks, Directional Antennas, Non-parametric Probability Density Function Estimation, Spatial Interpolation

Publication info

Dokument id / Document id:
Program:/ Programme Magisterprogram i Elektroteknik / Master of Science in Electrical Engineering
Registreringsdatum / Date of registration: 02/11/2011
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Luca Mottola (Ph.D.)
Examinator / Examiner: Jörgen Nordberg (Ph.D.)
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00
I samarbete med / In co-operation with: Swedish Institute of Computer Science (SICS)
Anmärkningar / Comments:

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Files & Access

Bifogad uppsats fil(er) / Files attached: thesis_report.pdf (2258 kB, öppnas i nytt fönster)