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In-Ho Lee4
Estimated H-index: 4
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Myungjin Cho13
Estimated H-index: 13
In this paper, we present an optical encryption and information authentication of 3D objects considering wireless channel characteristics. Using the optical encryption such as double random phase encryption (DRPE) and 3D integral imaging, a 3D scene with encryption can be transmitted. However, the wireless channel causes the noise and fading effects of the 3D transmitted encryption data. When the 3D encrypted data is transmitted via wireless channel, the information may be l...
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Visible light communications (VLC) use modern solid-state light-emitting diodes (LEDs) to broadcast information. Emerging white-light LEDs allow the combination of lighting and optical wireless communication in one optical source. In this paper, a new LED lighting design using one-chip-type white LEDs is proposed for efficient illumination and optical wireless communications under the existence of several obstacles. Lighting and communication performance are analyzed to show the ef...
Ref 6Cited 7
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This paper proposes an optical wireless transfer agent method which realizes the continuous and swift data transfer of optical wireless terminals in optical wireless networks. The unguided wireless channel generally shows frequent link disconnections and propagation delays due to weak wireless links. Specially speaking, optical wireless channels have more vulnerable links and roaming propagation delays relative to the weakness of the previous RF channels...
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Huan-lin Liu3
Estimated H-index: 3
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Hongyue Dai1
Estimated H-index: 1
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Yong Chen4
Estimated H-index: 4
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Visible Light Communication (VLC) using Light Emitting Diodes (LEDs) within the existing lighting infrastructure can reduce the implementation cost and may gain higher throughput than radio frequency (RF) or Infrared (IR) based wireless systems. Current indoor VLC systems may suffer from poor downlink resource allocation problems and small system throughput. To address these two issues, we propose an algorithm called a conflict graph scheduling (CGS) algorithm, including a conflict graph ...
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Zhitong Huang2
Estimated H-index: 2
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Jieqing Xiong1
Estimated H-index: 1
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Jianfeng Li2
Estimated H-index: 2
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State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, HaiDian District Xitucheng Road, 100876, P. R. China (Received February 24, 2015 : revised April 21, 2015 : accepted April 22, 2015)Visible light communication (VLC) is considered to be an attractive scheme to realize the broadband wireless communication for an indoor environment. We present a room division multiplexing (RDM) mechanism for an indoor multi-...
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Hyeongji Kim1
Estimated H-index: 1
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Atul Sewaiwar7
Estimated H-index: 7
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Yeon-Ho Chung10
Estimated H-index: 10
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 bas...
Ref 9Cited 1
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Ke Ji2
Estimated H-index: 2
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Heming Chen1
Estimated H-index: 1
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Wen Zhou2
Estimated H-index: 2
Terahertz (THz) communication has important applications in high-speed and ultra broadband wireless access networks. The THz modulator is one of the key devices in a THz communications system. Wavelength division multiplexing (WDM) can expand the capacity of THz communications systems, so research on multi wavelength THz modulators has significant value. By combining photonic-crystal and THz technology, a novel type of multi wavelength THz modulator based on a triple-lattice photonic crys...
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Myoung-geun Moon2
Estimated H-index: 2
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Su-il Choi6
Estimated H-index: 6
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Jaehyung Park6
Estimated H-index: 6
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In recent years, along with the rapid development of LED technology, indoor positioning systems based on visible light communication (VLC) have been researched. In this paper, we propose an accurate indoor positioning method using white-light LEDs and a dual image sensor. Indoor LED lights are located at the ceiling in a room and broadcast information on their positions using VLC technology. A mobile device with a dual image sensor receives LED position information by VLC and estimates its posit...
Ref 13Cited 6
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