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A power allocation method for \(2 \times 2\) VLC-MIMO indoor communication

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Abstract

Visible light communication (VLC) has been a promising field of optical communications which focuses on visible light spectrum that humans can see. Unlike existing studies which mainly discuss point-to-point communication, in this paper, we consider a VLC network, in particular a \(2 \times 2\) system. Our focus is on dealing with interference in this network. The objective is to maximize the signal to interference plus noise ratio (SINR) of one receiver for a given SINR of another receiver. We formulate a power allocation optimization problem to deal with such interference, and introduce dichotomy to solve this optimization problem. Simulation results have twofold meaning: First, \(\mathrm{SINR}_1\) increases with the growth of \(\mathrm{SINR}_2\), which are the SINR of the two receivers, respectively. Second, our proposed scheme outperforms the classical time-division multiple access technique in terms of transmit powers of both light sources when the data rate for these two schemes are set to be identical for each user, respectively.

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Authors and Affiliations

  1. Shenzhen Key Lab of Advanced Communication and Information Processing, College of Information Engineering, Shenzhen University, Shenzhen, China

    Mingjun Dai, Jing Yuan, Renhai Feng, Hui Wang, Bin Chen & Xiaohui Lin

  2. Shenzhen Key Lab of Media Security, College of Information Engineering, Shenzhen University, Shenzhen, China

    Mingjun Dai, Jing Yuan, Renhai Feng, Hui Wang, Bin Chen & Xiaohui Lin

  3. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, China

    Mingjun Dai, Jing Yuan, Renhai Feng, Hui Wang, Bin Chen & Xiaohui Lin

Authors
  1. Mingjun Dai
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  2. Jing Yuan
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  3. Renhai Feng
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  4. Hui Wang
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  5. Bin Chen
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  6. Xiaohui Lin
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Corresponding author

Correspondence to Jing Yuan.

Additional information

This work was supported by the National Natural Science Foundation of China under Grant (61301182, 61171071, 61575126), supported in part by the Postdoctoral Science Foundation of China under Grant 2015M572358, by the Specialized Research Fund for the Doctoral Program of Higher Education from the Ministry of Education of China under Grant 20134408120004, by the Natural Science Foundation of Guangdong Province under Grant (S2013040016857, 2015A030313552), by Yumiao Engineering from the Education Department of Guangdong Province under Grant 2013LYM_0077, by the Key Project of Department of Education of Guangdong Province under Grant 2015KTSCX121, by the Open Fund from The State Key Laboratory of Integrated Services Networks Xidian University under Grant ISN15-06, by the Foundation of Shenzhen City under Grant (KQCX20140509172609163, GJHS20120621143440025, JCYJ20140418095735590), by Natural Science Foundation of SZU under Grants 00002501 and 00036107.

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Dai, M., Yuan, J., Feng, R. et al. A power allocation method for \(2 \times 2\) VLC-MIMO indoor communication. Opt Rev 23, 678–682 (2016). https://doi.org/10.1007/s10043-016-0232-8

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  • DOI: https://doi.org/10.1007/s10043-016-0232-8

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