Design and Evaluation of a Hybrid SDR Testbed For Visible Light Communication and Wi-Fi

Master Thesis



Todays wireless networks are imagined to rely on radio communication. With the emergence of light-emitting diodes (LEDs) for illumination, the possibility arose to modulate light at high frequencies to transmit data, termed as visible light communication (VLC). However, VLC still needs to mature, faces problems as such as portability and thus, is proposed to coexist with ubiquitous Wi-Fi. There is little practice-oriented research on this topic, as VLC in itself is not established and hardware capable of both technologies does not exist. Before hybrid networks can be adopted in commercial products, testbeds are required for development of standards.

In this thesis, VLC hardware from prior works was modified, simulated, and built. With the constructed VLC  channel, measurements of link blockage were carried out. Handover from VLC to Wi-Fi on layer 2 was designed and simulated, based on the previously made measurements. Furthermore, a combined VLC+Wi-Fi testbed was designed based on two software-defined radio (SDR) platforms. The design shows that a testbed can be realized at reasonable effort. In addition, the proposed testbed underlines the wide design space of heterogeneous networks.

Start: 14.04.2017

End: 27.10.2017


Student: Richard Meister

Research Areas: CROSSING, Sichere Mobile Netze, CYSEC , S1



Prof. Dr.-Ing. Matthias Hollick

Technische Universität Darmstadt
Department of Computer Science
Secure Mobile Networking Lab 

Mornewegstr. 32 (S4/14)
64293 Darmstadt, Germany

Phone: +49 6151 16-25472
Fax: +49 6151 16-25471


A A A | Drucken Drucken | Impressum Impressum | Sitemap Sitemap | Suche Suche | Kontakt Kontakt | Webseitenanalyse: Mehr Informationen
zum Seitenanfangzum Seitenanfang