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An Adaptive Iterative Symbol Clipping Scheme for OFDM-Based Visible Light Communication

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Abstract

In this paper, an adaptive iterative symbol clipping scheme for OFDM-based visible light communication systems is proposed. This scheme can avoid the disadvantages of the conventional iterative signal clipping (ISC) scheme that produces all-zero symbols due to the fixed iterative clipping times, and also avoids the information transmission rate degradation due to an adaptive symbol decomposition with serial transmission (ASDST) scheme using serial transmission. In the proposal, optical orthogonal frequency division multiplexing (O-OFDM) symbols are decomposed into multiple O-OFDM symbols that are in the linear range of the LEDs after adaptive iterative clipping according to the signal amplitude and clipping threshold, thereafter simultaneously transmitted through multiple LEDs. When the number of LEDs is large enough, clipping distortion can be significantly reduced or even completely eliminated. In addition, the all-zero symbols existing in the ISC scheme can be completely eliminated. Experimental results show that the proposed scheme can not only improve the BER performance and the optical power efficiency, but also reduce the clipping times compared with the traditional ISC scheme. Besides,our proposed scheme could achieve higher information transmission rate compared with the ASDST scheme.

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Data Availability

The datasets analysed during the current study are available from the corresponding author on reasonable request.

Code Availability

The code will made be available on reasonable request.

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Funding

Funding was provided by Innovative Research Group Project of the National Natural Science Foundation of China (Grant Numbers 61461026, 61875080) and the Natural Science Foundation of Gansu Province of China (Grant Numbers 22JR5RA276).

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Author notes

  1. Cuicui Qin, Boran Yang, Minghua Cao and Suoping Li have contributed equally to this work.

Authors and Affiliations

  1. School of Computer and Communication, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China

    Kejun Jia, Cuicui Qin & Minghua Cao

  2. School of science, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China

    Suoping Li

  3. School of Information Science and Technology, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China

    Boran Yang

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  1. Kejun Jia
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  2. Cuicui Qin
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Correspondence to Kejun Jia.

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Jia, K., Qin, C., Yang, B. et al. An Adaptive Iterative Symbol Clipping Scheme for OFDM-Based Visible Light Communication. Wireless Pers Commun 128, 2531–2547 (2023). https://doi.org/10.1007/s11277-022-10058-9

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