Abstract

Most previous studies on non-line-of-sight optical camera communication (NLOS-OCC) were conducted as practical experiments; few relevant mathematical models have been proposed for simulation. This paper presents a simplified model for NLOS-OCC with a simple patterned reflective surface and proposes to directly decode the raw pixel values to improve the system performance. The model combines the mathematical models of a diffuse reflection channel and rolling shutter to obtain a normalized raw pixel value matrix of the pixel plane corresponding to the camera output image and realize visualization. Based on this model, we analyze the threshold selection and anti-interference ability of the conventional decoding scheme, and propose the sorting pre-decoding scheme: first sorting the pixel values by rows before decoding can effectively reduce the impact of the reflective surface pattern and enhance the system’s anti-interference ability.

© 2024 Optica Publishing Group

Non-line-of-sight 2 × N indoor optical camera communications

Navid Bani Hassan, Zabih Ghassemlooy, Stanislav Zvanovec, Pengfei Luo, and Hoa Le-Minh
Appl. Opt. 57(7) B144-B149 (2018)

Non-line-of-sight optical camera communications based on CPWM and a convolutional neural network

Xiangyu Wan, Bangjiang Lin, Zabih Ghassemlooy, Tianming Huang, Jiabin Luo, and Yongqi Ding
Appl. Opt. 62(28) 7367-7372 (2023)

Investigation of non-line-of-sight underwater optical wireless communications with wavy surface

Chengwei Fang, Shuo Li, Yinong Wang, and Ke Wang
Opt. Express 32(4) 4799-4815 (2024)

Joint interframe separation and gamma correction for asynchronous optical camera communication systems based on high-order statistics

Zhe Wang, Jinghang Han, Jialong Liang, and Lihua Zhang
Opt. Express 32(8) 14808-14825 (2024)

Effect of a vehicle’s mobility on SNR and SINR in vehicular optical camera communication systems

Mina Eghbal, Foroogh Sadat Tabataba, Asghar Gholami, Jamshid Abouei, and Murat Uysal
Opt. Express 32(7) 12257-12275 (2024)