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Channel capacity of the distributed MIMO relay in visible light communication systems

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Abstract

Visible light communication (VLC) is a novel paradigm that uses light-emitting diode (LED) light as an information carrier and has several advantages over radio-frequency communication in terms of the bandwidth, security and multi-path fading. When the VLC system is considered in an indoor environment, LED lamps, which are placed at the ceiling to provide ambient light, can offer rich spatial resources for VLC as distributed intermediate relaying terminals. This paper introduces a novel distributed multiple-input multiple-output (D-MIMO)-relaying VLC scheme and analyzes its communication performance. Using the sum rate of the broadcasting and multiple access relay channels, a tight upper bound on the channel capacity was derived. The numerical results showed that the D-MIMO-relaying VLC scheme outperformed the direct-path-based scheme in terms of the channel capacity. For a given indoor environment, the capacity of D-MIMO-relaying VLC can be improved further by selecting the appropriate relay parameters, such as the number of LED–PD pairs in a relay, distance between relays and height of relays.

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Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea government(MSIP) (2016R1C1B1013942) and supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A1A09058802).

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Authors and Affiliations

  1. Department of Information Communication Technology Automotive Engineering, Hoseo University, 201, Sandan 7-ro, Seongmun-myeon, Dangjin-si, Chungcheongnam-do, 31702, Republic of Korea

    Byung-Wook Kim

  2. Department of Electronic Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea

    Sung-Yoon Jung

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  1. Byung-Wook Kim
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  2. Sung-Yoon Jung
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Correspondence to Sung-Yoon Jung.

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Kim, BW., Jung, SY. Channel capacity of the distributed MIMO relay in visible light communication systems. Photon Netw Commun 34, 298–305 (2017). https://doi.org/10.1007/s11107-017-0698-8

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  • DOI: https://doi.org/10.1007/s11107-017-0698-8

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