Summary
International Symposium on Nonlinear Theory and Its Applications
2016
Session Number:A2L-G
Session:
Number:A2L-G-2
Performance Enhancement Using Unitary Frequency Modulation with PLC and VLC Cooperation
Chang-Jun Ahn, Yeon-Ho Chung,
pp.-
Publication Date:2016/11/27
Online ISSN:2188-5079
Summary:
Visible light communication (VLC) is expected as a means for ubiquitous communication using increasingly popular LED lights. However, for indoor optical channel, the received signals are with line of sight (LOS) component but also delayed components due to reflected secondary paths. Therefore, the energy is spread over the time, resulting in a reduction of the converted current at the photodiode. From this reason, the diversity gain of VLC is rarely expected as compared to radio frequency systems. To improve the VLC performance, we consider the combination of power line communication (PLC) and VLC systems for achieving the frequency diversity with unitary space-time modulation. In this paper, we propose the diagonal components of unitary signal constellation with splitting over the coherence bandwidth, and evaluate the system performance for PLC-VLC/OFDM.