Modulation Format Shifting Scheme for Optical Camera Communication

We propose and experimentally demonstrate a simple and elegant modulation format shifting (MFS) scheme by continuously changing the modulation formats between OOK and Manchester signal for optical camera communication (OCC) using a commercially available mobile phone. Leveraging the MFS scheme, extra data bits are delivered without reducing the pixel width of each bit, resulting in higher transmitted data rate. Meanwhile, multi-thresholding scheme is proposed for modulation format identification and signal decoding at the receiver. The experimental results demonstrate that the proposed MFS scheme can achieve a data rate of 8.16 Kbps with the bit error rate (BER) of $2.9\times 10^{-3}$ at the illuminance of 400 lux. In addition, compared with conventional OOK modulation, MFS scheme can remarkably improve the BER performance at the same data rate.

[1]  Yang Hong,et al.  2.38 Kbits/frame WDM transmission over a CVLC system with sampling reconstruction for SFO mitigation. , 2017, Optics express.

[2]  Jing He,et al.  Efficient Sampling Scheme Based on Length Estimation for Optical Camera Communication , 2019, IEEE Photonics Technology Letters.

[3]  Chi-Wai Chow,et al.  Thresholding schemes for visible light communications with CMOS camera using entropy-based algorithms. , 2016, Optics express.

[4]  C. Chow,et al.  Enhancement of Signal Performance in LED Visible Light Communications Using Mobile Phone Camera , 2015, IEEE Photonics Journal.

[5]  Chi-Wai Chow,et al.  Visible light communication using mobile-phone camera with data rate higher than frame rate. , 2015, Optics express.

[6]  Wan-Young Chung,et al.  Multilevel Intensity-Modulation for Rolling Shutter-Based Optical Camera Communication , 2018, IEEE Photonics Technology Letters.

[7]  Lin Chen,et al.  Multilevel modulation scheme using the overlapping of two light sources for visible light communication with mobile phone camera. , 2017, Optics express.

[8]  Jing He,et al.  A Novel Column Matrix Selection Scheme for VLC System With Mobile Phone Camera , 2019, IEEE Photonics Technology Letters.

[9]  Chi-Wai Chow,et al.  RGB visible light communication using mobile-phone camera and multi-input multi-output. , 2016, Optics express.

[10]  S. Arnon,et al.  Short-Range Optical Wireless Communications , 2005 .

[11]  Liu Xiaowei,et al.  Performance analysis and enhancement for visible light communication using CMOS sensors , 2018 .

[12]  Stefan Videv,et al.  Towards a 100 Gb / s visible light wireless access network , 2015 .

[13]  Jing He,et al.  Enabling user mobility for optical camera communication using mobile phone. , 2018, Optics express.