Literature Database Entry

rasche2015analyse


Carolin Rasche, "Analyse und Implementierung von Fountain Codes zur Aktualisierung kleinster, eingebetteter Systeme," Bachelor Thesis, Department of Computer Science, University of Paderborn, August 2015. (Advisors: Falko Dressler and Johannes Blobel)

Abstract

Wireless Sensor Networks (WSNs) are useful for solving ecological problems. It is a common occurrence that updating sensor nodes in such a network is necessary. In order to do so, the base station transmits code sequences to each node. This causes several problems for wireless sensor networks. The sensor nodes have very limited memory capacity and are running on a limited power supply. A failed transmission to a node - which means the transmission has to be redone - results in a higher power consumption of the sensor node. Fountain Codes are a class of forward error correction code that can be used to diminish this power drain caused by faulty transmissions. A comparison of different Fountain Code classes shows that Online Codes have desirable properties for trans- mission in a wireless sensor network. Additionally, Online Codes are patent-free and have linear complexity when decoding which results in a lower power consumption. During this bachelor thesis the decoding of Online Codes has been implemented for wireless sensor nodes and it turns out that these codes offer a reliable way of transmitting a test message. Unfortunately, this approach only works for small messages due to the limited memory capacity of the used sensor. Tests show that - in conclusion - Fountain Codes can be theoretically used for transmission in sensor networks. In practice however this specific implementation of Online Codes still needs further optimization to decrease the overhead and consumption of memory and to more efficiently deal with the small message sizes.

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Carolin Rasche

BibTeX reference

@phdthesis{rasche2015analyse,
    author = {Rasche, Carolin},
    advisor = {Dressler, Falko and Blobel, Johannes},
    title = {{Analyse und Implementierung von Fountain Codes zur Aktualisierung kleinster, eingebetteter Systeme}},
    institution = {Department of Computer Science},
    year = {2015},
    month = {August},
    school = {University of Paderborn},
    type = {Bachelor Thesis},
   }
   
   

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