Undersampled-PAM with subcarrier modulation for camera communications

Luo, Pengfei, Ghassemlooy, Zabih, Le Minh, Hoa, Tsai, Hsin-Mu and Tang, Xuan (2015) Undersampled-PAM with subcarrier modulation for camera communications. In: Opto-Electronics and Communications Conference (OECC), 28 June - 2 July 2015, Shanghai.

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Official URL: http://dx.doi.org/10.1109/OECC.2015.7340212

Abstract

In this paper, a novel undersampled pulse amplitude modulation with subcarrier modulation (UPAMSM) is proposed to supporting high efficiency non-flickering visible light camera communication (CamCom). A post-compensation technique is employed to reduce nonlinear effects caused by camera gamma correction. In order to eliminate phase uncertainty between transmitter and camera, and obtain the built-in gamma correction function of a camera, a dedicated framing structure is designed and applied. A test-bed with a light emitting diode (LED) and a commercial digital single-lens reflex (DSLR) camera is built to evaluate the performance of the proposed UPAMSM CamCom system. Experiment results show that this system can achieve a data rate of 250 bps (5 (bit/s)/Hz/LED) with a 50 fps camera at a distance of 1.5 m.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: camera communication, gamma correction, undersampled pulse amplitude modulation with subcarrier modulation
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 31 Mar 2016 12:30
Last Modified: 24 Oct 2017 08:52
URI: http://nrl.northumbria.ac.uk/id/eprint/26481

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