Relay-assisted OFDM transmission for indoor visible light communication

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

In this study, we investigate a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office space; one is the information source employed on the ceiling and the other one is a task light mounted on a desk. Our system builds upon DC biased optical orthogonal frequency division multiplexing (DCO-OFDM). The task light performs amplify-and-forward relaying to assist the communication and operates in half-duplex mode. We investigate the error rate performance of the proposed OFDM-based relay-assisted VLC system. Furthermore, we present joint AC and DC optimal power allocation in order to improve the performance. The DC power allocation is controlled by sharing the number of LED chips between the terminals and the AC power allocation decides the fraction of the information signal energy to be consumed at the terminals. Simulation results reveal that the VLC system performance can be improved via relay-assisted transmission and the performance gain as much as 6 dB can be achieved.

Original languageEnglish
Title of host publication2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014
PublisherIEEE Computer Society
Pages11-15
Number of pages5
ISBN (Print)9781479940677
DOIs
Publication statusPublished - Jan 1 2014
Event2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014 - Chisinau, Moldova, Republic of
Duration: May 27 2014May 30 2014

Publication series

Name2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014

Other

Other2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014
CountryMoldova, Republic of
CityChisinau
Period5/27/145/30/14

Keywords

  • DCO-OFDM
  • Visible light communication
  • amplify-and-forward
  • half-duplex
  • power allocation

ASJC Scopus subject areas

  • Computer Networks and Communications

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  • Cite this

    Kizilirmak, R. C., & Uysal, M. (2014). Relay-assisted OFDM transmission for indoor visible light communication. In 2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014 (pp. 11-15). [6848995] (2014 IEEE International Black Sea Conference on Communications and Networking, BlackSeaCom 2014). IEEE Computer Society. https://doi.org/10.1109/BlackSeaCom.2014.6848995