Please use this identifier to cite or link to this item:
Title: Optical camera communications for iot–rolling-shutter based MIMO scheme with grouped LED array transmitter
Authors: Teli, Shivani Rajendra
Matus, Vicente
Zvanovec, Stanislav
Perez-Jimenez, Rafael 
Vitek, Stanislav
Ghassemlooy, Zabih
UNESCO Clasification: 3325 Tecnología de las telecomunicaciones
Keywords: Internet Of Things
Light-Emitting Diodes
Multiple-Input Multiple-Output
Optical Camera Communications
Rolling-Shutter Camera
Issue Date: 2020
Journal: Sensors 
Abstract: In optical camera communications (OCC), the provision of both flicker-free illumination and high data rates are challenging issues, which can be addressed by utilizing the rolling-shutter (RS) property of the image sensors as the receiver (Rx). In this paper, we propose an RS-based multiple-input multiple-output OCC scheme for the Internet of things (IoT) application. A simplified design of multi-channel transmitter (Tx) using a 7.2 × 7.2 cm2 small 8 × 8 distributed light emitting diode (LED) array, based on grouping of LEDs, is proposed for flicker-free transmission. We carry out an experimental investigation of the indoor OCC system by employing a Raspberry Pi camera as the Rx, with RS capturing mode. Despite the small area of the display, flicker-free communication links within the range of 20–100 cm are established with data throughput of 960 to 120 bps sufficient for IoT. A method to extend link spans up to 1.8 m and the data throughput to 13.44 kbps using different configurations of multi-channel Tx is provided. The peak signal-to-noise ratio of ~14 and 16 dB and the rate of successfully received bits of 99.4 and 81% are measured for the shutter speeds of 200 and 800 µs for a link span of 1 m, respectively.
ISSN: 1424-8220
DOI: 10.3390/s20123361
Source: Sensors (Switzerland) [ISSN 1424-8220], v. 20 (12), p. 1-15, (Junio 2020)
Appears in Collections:Artículos
Adobe PDF (6,21 MB)
Show full item record


checked on Jun 23, 2024


checked on Jun 23, 2024

Page view(s)

checked on Feb 17, 2024


checked on Feb 17, 2024

Google ScholarTM




Export metadata

Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.