Abstract
Comparing with the existing incandescent, light-emitting diodes (LEDs) offer higher power efficiency, higher brightness, longer lifetime, and have a fast dynamic response in the order of a few megahertz. LEDs are recently expected to be utilised for the next generation indoor optical wireless communication (OWC) system. In this paper, we present a mathematical design model as well as a practical measurement for an indoor diffuse cellular visible light communication (VLC) system. It operates at a date rate of 5 Mb/s using the on-off keying non-return-to-zero (OOK-NRZ) modulation format. Using commercially available luminit holographic light shaping diffusers (LSD), we show that the achieved distributions of received power and the Q-factor are more uniform. The range and coverage area of the cellular link are therefore significantly extended.
| Original language | English |
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| Publication status | Published - 2011 |
| Event | 16th European Conference on Networks and Optical Communications (NOC) - Northumbria University, Newcastle-upon-Tyne Duration: 1 Aug 2011 → … |
Conference
| Conference | 16th European Conference on Networks and Optical Communications (NOC) |
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| Period | 1/08/11 → … |