Color Clustered Multiple-input Multiple-output Visible Light Communication

Han, Phyu Phyu; Sewaiwar, Atul; Tiwari, Samart V.; Chung, Yeon-Ho

doi:10.3807/josk.2015.19.1.074

Cited by 21 publications

(11 citation statements)

References 10 publications

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“…We also employ selection combining (SC) at the receiving end, where most probable bits are detected to produce improved performance. Simulation results verify that the proposed scheme can achieve a data rate of 2 Gbit/s with a BER value of 4×10 -5 , showing its superiority over conventional transmission schemes reported in the literature [9,12].…”

Section: Introductionmentioning

confidence: 56%

“…5 . Furthermore, the proposed scheme shows its superiority over advanced transmission schemes such as RGB LED MIMO [9] and BCYR LED-based 4-CSK [12] by gains of approximately 4 and 6 dB, respectively. Hence, the time-frequency colorclustered MIMO scheme coupled with the SC offers superior performance, even at very low Eb/No values.…”

Section: Simulation Resultsmentioning

confidence: 95%

“…The sum of all three paths after downconversion is then fed into the decision circuit, which performs an estimation based on the composite signal. The filtered and downconverted received signal in each cluster is then compared to the data received from the other PDs of the same cluster to perform the SC for detection of the most probable bit among the three candidates [9]. This SC process further provides the performance improvement of the proposed system.…”

Section: Receivermentioning

confidence: 99%

“…In the MIMO VLC, phosphorcoated white LEDs are predominantly employed for transmission [2][3][4][6][7][8], because these LEDs are popular, cheap, and easy to manufacture. Unlike these studies, a color-clustered MIMO technique using RGB LEDs was also proposed [9]. The color-clustered scheme for multiuser data transmission using RGB LEDs was first proposed in [10], while the study in [11] enhanced this strategy for a color-clustered bidirectional multiuser scheme, based on an efficient frame structure.…”

Section: Introductionmentioning

confidence: 99%

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2 Gbit/s VLC Scheme Using Time-Frequency Color-Clustered MIMO Based on BCYR LEDs

Han

Sewaiwar

Chung

2016

Journal of the Optical Society of Korea

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A 2 Gbit/s visible-light communication (VLC) scheme using time-frequency color-clustered (TFCC) multiple-input multiple-output (MIMO) based on blue, cyan, yellow, and red (BCYR) light-emitting diodes (LEDs) is presented. In the proposed scheme, BCYR LEDs are employed to form four different color clusters. Data transmission using the four color clusters is performed in MIMO, so that the scheme achieves a very high speed of data transmission. Moreover, the scheme employs the TFCC strategy to yield high performance in terms of bit error rate (BER). TFCC operates in such a way that the original data and the two delayed versions of the data are multiplied by orthogonal frequencies and then transmitted using a specific color of the BCYR LED. In the receiver, color filters are employed to detect the data transmitted from the desired cluster. Selection combining (SC) is also performed to yield a diversity effect within each color cluster, to further improve the performance. Performance evaluation demonstrates that the proposed TFCC MIMO VLC offers a data rate of 2 Gbit/s and a bit error rate of 4×10 , at an Eb/No value of merely 3 dB.

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Section: Introductionmentioning

confidence: 56%

Section: Simulation Resultsmentioning

confidence: 95%

Section: Receivermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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2 Gbit/s VLC Scheme Using Time-Frequency Color-Clustered MIMO Based on BCYR LEDs

Han

Sewaiwar

Chung

2016

Journal of the Optical Society of Korea

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“…In VLC the blinking of a light-emitting diode (LED) is used for communication and illumination simultaneously [5]. LED communication offers innovative wireless technologies in terms of communication speed, flexibility, usability, and security.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Time-Code Diversity Scheme for Shore-to-Sea Maritime Visible-Light Communication

Kim¹,

Sewaiwar²,

Chung³

2015

Journal of the Optical Society of Korea

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This paper presents a novel shore-to-sea maritime data transmission system based on time-code diversity, using visible light in maritime environments to overcome the limitations of conventional maritime wireless communications. The proposed system is primarily comprised of existing LED-based lighthouses and maritime transceivers (marine beacons, buoys, etc.), and thus is considered cost-effective in terms of implementation. We first analyze maritime visible-light communications on the basis of the unique properties of a maritime environment, i.e. sea states (wave height, wind speed, etc.), plus atmospheric turbulence, using the Pierson-Moskowitz (PM) and JONSWAP (JS) spectrum models. It is found that the JS model outperforms the PM model, and that the coverage distance depends on the LED power and sea states. To combat maritime fading conditions that significantly degrade performance and coverage distance, we propose a time-code diversity (TCD) scheme in which the delayed versions of the original data are retransmitted using orthogonal Walsh codes. This TCD scheme is found to be superior, in that it offers three orders of magnitude in terms of BER performance, compared to a conventional (non-TCD) transmission scheme. The proposed scheme is robust and efficient in overcoming the effect of impairments present in maritime environments with a BER of approximately 10 -5 and a data rate of 100 Kbps at a distance of 1 km.

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All Optical Health Monitoring System: An Experimental Study on Visible Light Communication in Biomedical Signal Transmission

Kumari

Dhanalakshmi

2017

Lecture Notes in Networks and Systems

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Color Clustered Multiple-input Multiple-output Visible Light Communication

Cited by 21 publications

References 10 publications

2 Gbit/s VLC Scheme Using Time-Frequency Color-Clustered MIMO Based on BCYR LEDs

2 Gbit/s VLC Scheme Using Time-Frequency Color-Clustered MIMO Based on BCYR LEDs

High-Performance Time-Code Diversity Scheme for Shore-to-Sea Maritime Visible-Light Communication

All Optical Health Monitoring System: An Experimental Study on Visible Light Communication in Biomedical Signal Transmission

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