Experimental Demonstration of a 1024-QAM Optical Camera Communication System

In this letter, we experimentally demonstrate a 1024-quadrature-amplitude-modulation (QAM) optical camera communications (OCC) system using a dual light-emitting diode (LED) and a commercial digital single-lens reflex camera. An undersampled QAM subcarrier modulation (UQAMSM) is proposed to support...

Full description

Saved in:
Bibliographic Details
Published in:IEEE photonics technology letters 2016-01, Vol.28 (2), p.139-142
Main Authors: Pengfei Luo, Min Zhang, Ghassemlooy, Zabih, Hoa Le Minh, Hsin-Mu Tsai, Xuan Tang, Dahai Han
Format: Article
Language:English
Subjects:
Adaptive optics
Bit error rate
Cameras
Communication systems
Compensation
Digital
Framing
Frequency shift keying
Impairment
Light emitting diodes
Modulation
optical camera communications
Quadrature amplitude modulation
Reflexes
undersampled quadrature-amplitude-modulation subcarrier modulation
visible light communications
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this letter, we experimentally demonstrate a 1024-quadrature-amplitude-modulation (QAM) optical camera communications (OCC) system using a dual light-emitting diode (LED) and a commercial digital single-lens reflex camera. An undersampled QAM subcarrier modulation (UQAMSM) is proposed to support a high-efficiency and non-flickering OCC system. Owing to the built-in gamma correction function of the camera, pre- and post-compensation techniques are successfully applied to compensate for the non-linear impairment. A dedicated framing structure is also designed to support the proposed UQAMSM and compensation techniques. The experimental results show that this system is able to achieve a data rate of 500 b/s using a dual LED and a 50 ft/s commercial camera over a transmission span of 1.5 m, which is suitable for the transmission and reception of location-based information.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2487544