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HY-PC: Enabling Consistent Positioning and Communication Using Visible Light
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DOI：10.23919/JCC.fa.2022-0731.202304.png)
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Abstract
En 中文
Visible light (VL) plays an important role in achieving high-precision positioning and low bit er-ror radio (BER) data communication. However, most VL-based systems can not achieve positioning and communication, simultaneously. There are two prob-lems: 1) the hybrid systems are difficult to extract dis-tinguishable positioning beacon features without af-fecting communication performance, 2) in the hybrid systems, the lost data bits in the inter-frame gap (IFG) are hard to recover, which affects positioning and communication performance. Therefore, in this arti-cle, we propose a novel VL-based hybrid positioning and communication system, named HY-PC system, to solve the above problems. First, we propose the robust T-W mapping for recognizing specific Light Emitting Diodes (LEDs), which can provide stable LED recog-nition accuracy without adding extra beacon data and does not decrease the communication rate. Further-more, we also propose the novel linear block coding and bit interleaving mechanism, which can recover the lost data bits in the IFG and improve data communica-tion performance. Finally, we use commercial off-the - shelf devices to implement our HY-PC system, exten-sive experimental results show that our HY-PC system can achieve consistent high-precision positioning and low-BER data communication, simultaneously.
Keywords:
visible light positioning
visible light communication
T-W Mapping
linear block coding
bit interleaving
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