Visible light communication system using mobile phone camera receiver and imaging receiver

Nowadays, white light-emitting diodes (LEDs) are promising for future indoor lighting due to their advantages such as low power consumption, long lifetime, small size and cool operation. Intensity modulation with direct detection of LED as well as unlicensed visible light spectrum provide the potent...

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Main Author: Deng, Lingzhe
Other Authors: Zhong Wende
Format: Final Year Project
Language:English
Published: 2016
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Online Access:http://hdl.handle.net/10356/67500
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-675002023-07-07T16:33:36Z Visible light communication system using mobile phone camera receiver and imaging receiver Deng, Lingzhe Zhong Wende School of Electrical and Electronic Engineering DRNTU::Engineering Nowadays, white light-emitting diodes (LEDs) are promising for future indoor lighting due to their advantages such as low power consumption, long lifetime, small size and cool operation. Intensity modulation with direct detection of LED as well as unlicensed visible light spectrum provide the potential of low-cost and high-speed indoor wireless visible light communication (VLC). This report describes an experimental demonstration of the indoor wireless VLC system using white LED as transmitter. An indoor wireless VLC system using white LED as transmitter and using mobile phone camera as receiver is designed and built due to the popularity of mobile devices equipped with embedded cameras. A photo containing an oversampled OOK signal is captured by CMOS sensors embedded in mobile phone camera with rolling shutter mechanism. Through experiments, 11 bits can be extracted correctly from a photo. The system data rate is found to be limited by the intrinsic property of rolling shutter effect. An indoor wireless 2 × 2 MIMO OFDM VLC system using white LEDs as transmitters and using imaging receiver is designed and built. An imaging receiver can form a well-conditioned channel matrix for MIMO signal detection and thus the system data rate can grow multiply according to the MIMO size. The OFDM signals is transmitted over a free-space distance. The raw data rate per channel is 200 Mbps using 16QAM mapping and 50 MHz modulation bandwidth, and the system data rate achieved is 400 Mbps (200 × 2 Mbps). When the distance is 1.05m and receiver position offset is 0 cm, the average BER about 3.8 × 10-3 is achieved. When the distance is 1 m and receiver position offset is 12 cm, the average BER about 3.8 × 10-3 is achieved. Bachelor of Engineering 2016-05-17T06:24:47Z 2016-05-17T06:24:47Z 2016 Final Year Project (FYP) http://hdl.handle.net/10356/67500 en Nanyang Technological University 48 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Deng, Lingzhe
Visible light communication system using mobile phone camera receiver and imaging receiver
description Nowadays, white light-emitting diodes (LEDs) are promising for future indoor lighting due to their advantages such as low power consumption, long lifetime, small size and cool operation. Intensity modulation with direct detection of LED as well as unlicensed visible light spectrum provide the potential of low-cost and high-speed indoor wireless visible light communication (VLC). This report describes an experimental demonstration of the indoor wireless VLC system using white LED as transmitter. An indoor wireless VLC system using white LED as transmitter and using mobile phone camera as receiver is designed and built due to the popularity of mobile devices equipped with embedded cameras. A photo containing an oversampled OOK signal is captured by CMOS sensors embedded in mobile phone camera with rolling shutter mechanism. Through experiments, 11 bits can be extracted correctly from a photo. The system data rate is found to be limited by the intrinsic property of rolling shutter effect. An indoor wireless 2 × 2 MIMO OFDM VLC system using white LEDs as transmitters and using imaging receiver is designed and built. An imaging receiver can form a well-conditioned channel matrix for MIMO signal detection and thus the system data rate can grow multiply according to the MIMO size. The OFDM signals is transmitted over a free-space distance. The raw data rate per channel is 200 Mbps using 16QAM mapping and 50 MHz modulation bandwidth, and the system data rate achieved is 400 Mbps (200 × 2 Mbps). When the distance is 1.05m and receiver position offset is 0 cm, the average BER about 3.8 × 10-3 is achieved. When the distance is 1 m and receiver position offset is 12 cm, the average BER about 3.8 × 10-3 is achieved.
author2 Zhong Wende
author_facet Zhong Wende
Deng, Lingzhe
format Final Year Project
author Deng, Lingzhe
author_sort Deng, Lingzhe
title Visible light communication system using mobile phone camera receiver and imaging receiver
title_short Visible light communication system using mobile phone camera receiver and imaging receiver
title_full Visible light communication system using mobile phone camera receiver and imaging receiver
title_fullStr Visible light communication system using mobile phone camera receiver and imaging receiver
title_full_unstemmed Visible light communication system using mobile phone camera receiver and imaging receiver
title_sort visible light communication system using mobile phone camera receiver and imaging receiver
publishDate 2016
url http://hdl.handle.net/10356/67500
_version_ 1772827874151104512