Undersampled-PAM with subcarrier modulation for camera communications

Pengfei Luo; Zabih Ghassemlooy; Hoa Le Minh; Hsin-Mu Tsai; Xuan Tang

doi:10.1109/OECC.2015.7340212

Undersampled-PAM with subcarrier modulation for camera communications

Pengfei Luo, Zabih Ghassemlooy, Hoa Le Minh, Hsin-Mu Tsai, Xuan Tang

Research output: Contribution to conference › Paper › peer-review

29 Citations (Scopus)

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.

Original language	English
DOIs	https://doi.org/10.1109/OECC.2015.7340212
Publication status	Published - 2015
Event	Opto-Electronics and Communications Conference (OECC) - Shanghai Duration: 1 Jan 2015 → …

Conference

Conference	Opto-Electronics and Communications Conference (OECC)
Period	1/01/15 → …

Keywords

camera communication
gamma correction
undersampled pulse amplitude modulation with subcarrier modulation

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10.1109/OECC.2015.7340212

Cite this

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title = "Undersampled-PAM with subcarrier modulation for camera communications",

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.",

keywords = "camera communication, gamma correction, undersampled pulse amplitude modulation with subcarrier modulation",

author = "Pengfei Luo and Zabih Ghassemlooy and \{Le Minh\}, Hoa and Hsin-Mu Tsai and Xuan Tang",

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T1 - Undersampled-PAM with subcarrier modulation for camera communications

AU - Luo, Pengfei

AU - Ghassemlooy, Zabih

AU - Le Minh, Hoa

AU - Tsai, Hsin-Mu

AU - Tang, Xuan

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - camera communication

KW - gamma correction

KW - undersampled pulse amplitude modulation with subcarrier modulation

UR - https://www.scopus.com/pages/publications/84960895130

U2 - 10.1109/OECC.2015.7340212

DO - 10.1109/OECC.2015.7340212

M3 - Paper

T2 - Opto-Electronics and Communications Conference (OECC)

Y2 - 1 January 2015

ER -

Undersampled-PAM with subcarrier modulation for camera communications

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