Application of advanced modulation methods in broadband wireless networks employing visible light

Application of advanced modulation methods in broadband wireless networks employing visible light

Period: 2012 – 2015

Grant from: National Center for Science (NCN, http://ncn.gov.pl)

Status: finished

Project leader: J. Siuzdak

Participants: G. Stępniak, M. Kowalczyk, Ł. Maksymiuk

Abstract:
The proposed project goal is to apply advanced modulation methods in wide band optical wireless networks employing visible light. Here, we propose to use lighting LEDs in wideband OW networks and to investigate effective multilevel/multivalue modulation formats (such as PAM-k, CAP, OFDM/DMT) that may be used to this end. These modulation formats applicability will be verified for various OW link scenarios (i.e. directed/non-directed line of sight- LOS, diffuse, quasi-diffuse etc.) in the presence or absence of multipath propagation. Apart from the theoretical analysis the suitability of selected modulation formats will be practically tested in a measurement setup consisting of arbitrary wavelength generator (AWG), modulator, set of LEDs, optical receiver and sampling oscilloscope. Finally, the modulation type selected according the above research will be implemented in the model of wideband OW network employing lighting LEDs.