Wireless EEG Signal Transmission Using Visible Light Optical Camera Communication

Wireless technologies that are based on radio frequencies are currently widely used, with numerous applications around the world. However, they pose some disadvantages to human health. High frequencies can have potentially harmful effects on children, hospital patients, and even healthy people if the signal power exceeds the permitted standard. Conversely, the use of visible light for data transmission is a trend that presents new options, including optical wireless communication, optical camera communication, and visible light communication. This paper proposes a modulation scheme based on on-off keying in the time domain, which is applied to a monitoring system using optical camera communication. This scheme has various compatible supports for the global-shutter camera and rolling-shutter camera, which are popular commercially available cameras. Furthermore, this scheme facilitates a low-cost monitoring system. By using small light-emitting diodes (LEDs) and controlling the exposure time in a single camera, the camera, as a receiver, can simultaneously detect signals from up to 10 sensor devices in different positions at a maximum distance of up to 50 m, with a low error rate.

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Subdural to subgaleal EEG signal transmission: The role of distance, leakage and insulating affectors

Clinical Neurophysiology ◽

10.1016/j.clinph.2013.02.112 ◽

2013 ◽

Vol 124 (8) ◽

pp. 1570-1577 ◽

Cited By ~ 5

Author(s):

Jonas Duun-Henriksen ◽

Troels Wesenberg Kjaer ◽

Rasmus Elsborg Madsen ◽

Bo Jespersen ◽

Anne Katrine Duun-Henriksen ◽

...

Keyword(s):

Signal Transmission ◽

Eeg Signal

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Visible Light Communication Channel Models and Simulation of Coal Workface Energy Coupling

Mathematical Problems in Engineering ◽

10.1155/2015/271352 ◽

2015 ◽

Vol 2015 ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Yanrong Zhai ◽

Shen Zhang

Keyword(s):

Visible Light ◽

Communication Systems ◽

Communication Channel ◽

Channel Model ◽

Coal Dust ◽

Signal Transmission ◽

Energy Coupling ◽

Mathematic Model ◽

Visible Light Communication ◽

Optical Signal

Due to their low energy consumption and small size, visible light communication systems have been widely used to eliminate communication-blind areas in coal workfaces. A workface visible light communication channel model and a mathematic model of energy coupling from the mining machine’s workspace to its footpath were established to investigate the characteristics of optical signal transmission on the workface. This paper studies the effects of coal dust (double-layer particles encapsulated by moisture) on optical signal degradation. Simulation results revealed the presence of an optimized transmitter location, which maximized the coupled energy of the two space signals due to the blocking effect of metal columns.

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Drone Based Sensor Network Scenario for the Efficient Pedestrian's EEG Signal Transmission

The Journal of the Korea institute of electronic communication sciences ◽

10.13067/jkiecs.2016.11.9.923 ◽

2016 ◽

Vol 11 (9) ◽

pp. 923-928

Author(s):

Jun-Mo Jo

Keyword(s):

Sensor Network ◽

Signal Transmission ◽

Eeg Signal

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Detection and Transmission of EEG Signal Using VLC

Intelligent Systems and Computer Technology - Advances in Parallel Computing ◽

10.3233/apc200130 ◽

2020 ◽

Author(s):

Dhanalakshmi A ◽

Priyadarshni S ◽

Kayalvizhi P ◽

Devi Priya G ◽

Oviya S

Keyword(s):

Health Care ◽

Computer Simulation ◽

Visible Light ◽

Visible Light Communication ◽

Eeg Signal ◽

Signal Loss ◽

Wireless System ◽

Medical Test ◽

Line Frequency ◽

Medical Environment

The healthcare and the management of quality is very essential part to the recent period of medical environment. To enhance these, to make sufferer easy with timely and best remedial care.EEG systems are closely relevant on the performance using wireless system because of its more capabilities. But it has various disadvantages like line frequency interference and signal loss,. Currently there is usage of RF in healthcare environment and medical test centre which have dangerous for the health of the patients. So we are in need of alternative eco-friendly source of communication in health care. So the alternative way is proposed here is the VLC (Visible Light Communication) transmission technology that uses white LED for data transmission which has efficiency, reliability and high precision. The ADC produces data stream of EEG signal which is modulated using OOK .Here LED works as a transmitter and photodiode with sensor works as receiver and uses computer simulation for further evaluation.

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Universal and Effective Decoding Scheme for Visible Light Positioning Based on Optical Camera Communication

Electronics ◽

10.3390/electronics10161925 ◽

2021 ◽

Vol 10 (16) ◽

pp. 1925

Author(s):

Hongzhan Song ◽

Shangsheng Wen ◽

Chen Yang ◽

Danlan Yuan ◽

Weipeng Guan

Keyword(s):

Visible Light ◽

Mobile Devices ◽

Environmental Changes ◽

Indoor Positioning ◽

Image Sensor ◽

Experimental Results ◽

Threshold Scheme ◽

Transmission Channel ◽

Decoding Algorithm ◽

Optical Camera Communication

As a promising approach to implement indoor positioning, visible light positioning (VLP) based on optical camera communication (OCC) image sensor has attracted substantial attention. However, the decoding schemes of existing VLP systems still face many challenges. First, the transmission channel between transmitters and receivers can be easily affected by environmental changes, resulting in poor thresholding performance. Second, the inherently unsynchronized air transmission channel issue remains a big obstacle for decoding data. The above two problems limit the application of VLP systems, where various mobile devices are used as receivers and the properties of transmission channel are constantly changing with the movement of receivers. In this paper, a universal and effective decoding scheme named pixel-to-bit calculation (PBC) decoding algorithm for VLP systems is proposed and experimentally demonstrated. It includes a Staged Threshold Scheme which provides excellent thresholding performance for different transmission channel conditions, as well as a Synchronous Decoding Operation to automatically synchronize the clock between transmitters and receivers. A decoding rate of 95.62% at the height of 2.73 m is realized in a practical Robotic-based VLP system embedded with our proposed PBC decoding scheme. In addition, experimental results show that the average decoding rate of the proposed PBC decoding scheme reaches 99.9% when applying different transmitters and receivers.

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