Adaptive Modulation Schemes for Visible Light Communications

Wu, Liang; Zhang, Zaichen; Dang, Jian; Liu, Huaping

doi:10.1109/jlt.2014.2374171

Cited by 136 publications

(61 citation statements)

References 24 publications

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“…Oleh karena itu, apabila inframerah dapat digunakan dalam sistem komunikasi, hal yang sama dapat dilakukan dengan menggunakan VL (Hanzo, Haas, Rupp, & Gyongyosi). Pada beberapa penelitian telah dibuktikan bahwa VL dapat dimanfaatkan pula untuk kebutuhan lain, yaitu pada sistem komunikasi (Wu, Zhang, Dang, & Liu, 2015) (Monteiro & Hranilovic, 2014) (Liu et al, 2012). Sistem komunikasi dengan media cahaya memiliki potensi yang sangat besar dalam menggantikan media wireless.…”

Section: Pendahuluanunclassified

“…sinyal yang dikirimkan hanyalah sinyal biasa yang belum terlalu kompleks. Diketahui dari beberapa penelitian teknologi Visible Light Communication (VLC) harus memperhatikan penggunaan LED dan photodiode yang sesuai dengan sinyal informasinya (Liao, Chang, Ho, & Wu, 2013) dan dapat menggunakan beberapa metoda dalam aplikasinya (Bykhovsky & Arnon, 2014) (Chang et al, 2014) (Monteiro & Hranilovic, 2014) (Singh, O'Farrell, & David, 2014) (Wu et al, 2015). Serta dari beberapa penelitian lainnya didapatkan hasil yang mendukung pemanfaatan VLC sebagai teknologi masa depan yang patut diteliti lebih lanjut (Darlis, Cahyadi, & Chung, 2018) (Hanzo et al, 2012) (Liu, Yeh, & Chow, 2013).…”

Section: Pendahuluanunclassified

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Color Filter Identification for Bidirectional Visible Light Communication

2018

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ABSTRAKSaat ini, cahaya tampak dimanfaatkan oleh manusia hanya sebagai penerangan saja. Akan tetapi, beberapa penelitian telah membuktikan bahwa cahaya tampak dapat dimanfaatkan pula pada sistem komunikasi, yang dinamakan Visible Light Communication (VLC). Pada penelitian ini, sebuah metoda menggunakan color filter diidentifikasi dalam mengimplementasikan sistem bidirectional pada teknologi VLC. Dengan adanya penelitian ini, sebuah sistem bidirectional Visible Light Communication (Bi-VLC) dapat diimplementasikan dengan menggunakan color filter tertentu yang dipasangkan pada posisi uplink dan downlink. Sinyal informasi berupa sinyal audio ditansmisikan melalui VLC transmitter (Tx) yang dipasang color filter dan diterima oleh color filter pada VLC receiver (Rx) setelah melalui media cahaya. Pengujian menunjukan bahwa sistem telah dapat melewatkan sinyal pada frekuensi audio dengan jarak maksimum dari sistem adalah 2,3 m. Sedangkan pasangan color filter yang memiliki kinerja paling baik untuk BI-VLC adalah Azure (Tx) dengan Charteuse Green (Rx), Charteuse Green (Tx) dengan Charteuse Green (Rx), dan Rose (Tx) dengan Charteuse Green (Rx).Kata kunci: Bidirectional, Visible Light Communication (VLC), Color Filter, Audio ABSTRACT Currently, visible light are utilized by humans as illumination only. However, several research have proven that visible light can also be used in communication systems, called Visible Light Communication (VLC). In this research, a method of using color filters was identified for bidirectional systems on VLC technology. With this research, a bidirectional Visible Light Communication (Bi-VLC) system can be implemented using a specific color filter paired in uplink and downlink mode. The audio signal as information is transmitted through a VLC transmitter (Tx) installed by a color filter and received by the color filter on the VLC receiver (Rx) after going through the light media. The result shows that the system has been able to pass the signal at the audio frequency with the maximum distance of the system is 2.3 m. While the best performance of color filter pair for BI-VLC is Azure (Tx) with Charteuse Green (Rx), Charteuse Green (Tx) with Charteuse Green (Rx), and Rose (Tx) with Charteuse Green (Rx).

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Section: Pendahuluanunclassified

Color Filter Identification for Bidirectional Visible Light Communication

2018

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“…Proposed V2LC schemes were studied either experimentally [5,9,15,27] or via computer-based simulations using the Lambertian property of LEDs [26,28]. Most of the academic research on V2LC has targeted achievement of high data rates by using advanced modulation schemes [20,30,31]. Since the history likes to repeat itself, a common mistake in novel applications was to underestimate the security issues [24].…”

Section: Secure Vehicular Communications Through V2lcmentioning

confidence: 99%

Vehicular Visible Light Communications

Turan¹,

Uçar²

2017

Visible Light Communications

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“…In this study, it is assumed that both illumination and communication functions are provided by the optical attocell system, which means the optical power for downlink communication is high [3]. It has been shown that a signal-to-noise ratio (SNR) up to 70 dB is achievable in a single cell deployment with such high output optical power [15]. At the transmitter side of an OFDM system, a frequency domain symbol sequence with K quadrature amplitude modulation (QAM) data symbols are defined as: X = [X 0 X 1 X 2 · · · X K−1 ].…”

Section: B Dco-ofdm Transmissionmentioning

confidence: 99%

Downlink SINR Statistics in OFDM-Based Optical Attocell Networks with a Poisson Point Process Network Model

Cheng

Haas

2015

2015 IEEE Global Communications Conference (GLOBECOM)

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In this paper, the downlink signal-to-interferenceplus-noise ratio (SINR) statistics are analysed in a direct currentbiased optical orthogonal frequency division multiplexing (DCO-OFDM) based optical attocell network with a Poisson point process (PPP) cell deployment. An optical attocell system utilises existing lighting fixtures in an indoor environment to function as a small-cell cellular network. It uses each luminary as a base station (BS) to serve multiple nearby mobile users. Similar to a conventional radio frequency (RF) cellular system, the grid cell deployment is restricted by many practical issues in an optical attocell network. Therefore the performance of the system with PPP cell deployment is considered in this study in order to identify a lower bound for practical attocell networks with irregular cell deployment. An analytical framework is presented and compared with the computer simulations. Also the SINR statistics with different cell deployments are compared and discussed.Index Terms-cellular network, optical attocell network, Poisson point process, visible light communication.

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Adaptive Modulation Schemes for Visible Light Communications

Cited by 136 publications

References 24 publications

Color Filter Identification for Bidirectional Visible Light Communication

Color Filter Identification for Bidirectional Visible Light Communication

Vehicular Visible Light Communications

Downlink SINR Statistics in OFDM-Based Optical Attocell Networks with a Poisson Point Process Network Model

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