Ambient light noise filtering technique for multimedia high speed transmission system in MIMO-VLC
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Ambient light noise filtering technique for multimedia high speed transmission system in MIMO-VLC Doohee Han 1 & Kyujin Lee 2 Received: 25 July 2019 / Revised: 12 July 2020 / Accepted: 18 August 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract
In this paper, we analyze the degradation of system performance due to the variation of ambient illumination in MIMO-VLC environment for high-speed multimedia transmission and propose an adaptive filter technique to solve this problem. Conventional PDbased visible light communication systems are not suitable for multimedia high-speed transmission. It is vulnerable to optical interference in the presence of a large number of LEDs, and it is difficult to implement MIMO. For large-capacity high-speed transmission, it is necessary to increase the transmission capacity. MIMO-VLC using m * m LED matrix and image sensor enables high-speed transmission through data parallel transmission. However, the received power is greatly influenced by the surrounding light source environment and the receiving distance. Illumination changes caused by non-scattered lights in the indoor environment, which deteriorates the performance of the system. In order to solve this problem, adaptive filter coefficients according to the ambient illuminance are applied to improve on / off recognition rate of LED matrix. By using this technique to adjust the filter values for image processing according to the step-by-step illumination, the multi-LED pixel can be accurately recognized and the MISO-VLC QoS can be maintained. Keywords Multimedia data transmission . Optical wireless communication . Visible light communication . Deep learning . MIMO-VLC
* Kyujin Lee [email protected] Doohee Han [email protected]
1
Department of Faculty of Liberal Arts, Sung Woon University, 105, Daehak-gil, Sinnyeong-myeon, Yeongcheon-si, Gyeongsangbuk-do, Republic of Korea
2
Department of Electronic Engineering, Semyung University, 579, Sinwoul-dongChungbuk 390-711 Jecheon, Republic of Korea
Multimedia Tools and Applications
1 Introduction Convergence technologies such as IoT and ICT are attracting attention as the keyword of the fourth industrial revolution appears. With the rapid development of various network infrastructures, multimedia data traffic is increasing rapidly. In this change, LED based visible light communication system is actively studied [9]. LED-based visible light communication system is a system that transmits data based on visible light emitted from LED. A study on the wireless network environment using LED lighting has been under way [11]. It also eliminates the need for frequency licensing, does not interfere with the Industrial Scientific Medical band (ISM) band, and provides physically high levels of security. The optical bandwidth of the LED light source can transmit high-speed data compared to conventional RF communication, making it a next generation wireless communication system that many companies are interested in. The convergence of LED-based lighting fun
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