Group statistical channel coding dimming scheme in visible light communication system

2016 ◽  
Vol 377 ◽  
pp. 100-103 ◽  
Author(s):  
Kaiyu Zhuang ◽  
Zhitong Huang ◽  
Ruqi Zhang ◽  
Jianfeng Li ◽  
Yuefeng Ji
Keyword(s):  
Visible Light ◽  
Communication System ◽  
Channel Coding ◽  
Visible Light Communication

Tunnel visible light communication system utilizing nonlinear suppression technique

Optik ◽  
2021 ◽  
Vol 228 ◽  
pp. 166195
Author(s):  
Dong Wang ◽  
Chao Li ◽  
Yinghe Wang ◽  
Zhe Kang
Keyword(s):  
Visible Light ◽  
Communication System ◽  
Visible Light Communication ◽  
Suppression Technique

scholarly journals Research on Secure Debugging Interaction of Sensor Nodes Based on Visible Light Communication

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 953 ◽  
Author(s):  
Yuanchu Yin ◽  
Jiefan Qiu ◽  
Zhiqiang Li ◽  
Mingsheng Cao
Keyword(s):  
Visible Light ◽  
Channel Coding ◽  
Sensor Node ◽  
Source Coding ◽  
Visible Light Communication ◽  
Propagation Characteristic ◽  
Transmission Efficiency ◽  
Sensor Nodes ◽  
Pulse Interval ◽  
Inaccessible Area

When a wireless sensor node’s wireless communication fails after being deployed in an inaccessible area, the lost node cannot be repaired through a debugging interaction that relies on that communication. Visible light communication (VLC) as a supplement of radio wave communication can improve the transmission security at the physical layer due to its unidirectional propagation characteristic. Therefore, we implemented a VLC-based hybrid communication debugging system (HCDS) based on VLC using smartphone and sensor node. For the system’s downlink, the smartphone is taken as the VLC gateway and sends the debugging codes to the sensor node by the flashlight. To improve the transmission efficiency of the downlink, we also propose a new coding method for source coding and channel coding, respectively. For the source coding, we analyze the binary instructions and compress the operands using bitmask techniques. The average compression rate of the binary structure reaches 84.11%. For the channel coding, we optimize dual-header pulse interval (DH-PIM) and propose overlapped DH-PIM (ODH-PIM) by introducing a flashlight half-on state. The flashlight half-on state can improve the representation capability of individual symbols. For the uplink of HCDS, we use the onboard LED of the sensor node to transmit feedback debugging information to the smartphone. At the same time, we design a novel encoding format of DH-PIM to optimize uplink transmission. Experimental results show that the optimized uplink transmission time and BER are reduced by 10.71% and 22%, compared with the original DH-PIM.

scholarly journals A Manchester-OOK Visible Light Communication System for Patient Monitoring in Intensive Care Units

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Klaas vd Zwaag ◽  
Marianne Marinho ◽  
Wesley Costa ◽  
Francisco Santos ◽  
Teodiano Bastos-Filho ◽  
...  
Keyword(s):  
Intensive Care ◽  
Visible Light ◽  
Intensive Care Units ◽  
Communication System ◽  
Patient Monitoring ◽  
Visible Light Communication

Statistical channel modelling of dynamic vehicular visible light communication system

2021 ◽  
Vol 29 ◽  
pp. 100339
Author(s):  
Farah Mahdi Alsalami ◽  
Zahir Ahmad ◽  
Stanislav Zvanovec ◽  
Paul Anthony Haigh ◽  
Olivier C.L. Haas ◽  
...  
Keyword(s):  
Visible Light ◽  
Communication System ◽  
Visible Light Communication ◽  
Channel Modelling

Detection of LED traffic light by image processing for visible light communication system

2009 ◽  
Author(s):  
H. Chinthaka ◽  
N. Premachandra ◽  
Tomohiro Yendo ◽  
Takaya Yamasato ◽  
Toshiaki Fujii ◽  
...  
Keyword(s):  
Image Processing ◽  
Visible Light ◽  
Communication System ◽  
Visible Light Communication ◽  
Traffic Light
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