TY - JOUR
T1 - Non-line-of-sight WDM-MIMO optical camera communications with the DBPWR algorithm
AU - Jiang, Ningcong
AU - Lin, Bangjiang
AU - Lai, Qiwei
AU - Huang, Tianming
AU - Ghassemlooy, Zabih
AU - Younus, Othman Isam
AU - Luo, Jiabin
AU - Xie, Yufang
AU - Dai, Lingfeng
AU - Huang, Zhuo
N1 - Funding Information: This work was supported in part by STS Project of CAS and Fujian Province, China under Grant 2020T3026 ; Science and Technology Program of Quanzhou, China (Grant No. 2021C005R , 2020G18 and 2020C069 ); State Key Laboratory of Advanced Optical Communication Systems and Networks, China ; and EU COST Action NEWFOCUS under Grant CA19111.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - Non-line-of-sight (NLOS) optical camera communications (OCC) is a potential wireless communication technology, which offers robustness to blocking and blooming effect, higher data throughput over longer transmission distances compared with line-of-sight OCC. In this work, we propose a wavelength division multiplexing (WDM)-multiple inputs multiple outputs (MIMO) NLOS OCC system with multi-level pulse width modulation (MPWM) and difference-based pulse width recognition (DBPWR) schemes. Signals on different color channels are separated through the RGB filter of the CMOS camera, while MPWM signals on the same color channel are separated using the DBPWR algorithm. Compared with the conventional threshold-based demodulation scheme, the proposed DBPWR scheme has lower complexity, higher reliability, and improved sampling frequency offset tolerance. A total data rate of 10.8 kb/s is experimentally demonstrated over more than 2 m NLOS link using the proposed WDM-MIMO OCC system, which is sufficient in many Internet of things applications.
AB - Non-line-of-sight (NLOS) optical camera communications (OCC) is a potential wireless communication technology, which offers robustness to blocking and blooming effect, higher data throughput over longer transmission distances compared with line-of-sight OCC. In this work, we propose a wavelength division multiplexing (WDM)-multiple inputs multiple outputs (MIMO) NLOS OCC system with multi-level pulse width modulation (MPWM) and difference-based pulse width recognition (DBPWR) schemes. Signals on different color channels are separated through the RGB filter of the CMOS camera, while MPWM signals on the same color channel are separated using the DBPWR algorithm. Compared with the conventional threshold-based demodulation scheme, the proposed DBPWR scheme has lower complexity, higher reliability, and improved sampling frequency offset tolerance. A total data rate of 10.8 kb/s is experimentally demonstrated over more than 2 m NLOS link using the proposed WDM-MIMO OCC system, which is sufficient in many Internet of things applications.
KW - Multiple-input multiple-output (MIMO)
KW - Non-line-of-sight (NLOS)
KW - Optical camera communication (OCC)
KW - Visible light communications (VLC)
KW - Wavelength division multiplexing (WDM)
UR - https://www.scopus.com/pages/publications/85130093820
U2 - 10.1016/j.optcom.2022.128371
DO - 10.1016/j.optcom.2022.128371
M3 - Article
AN - SCOPUS:85130093820
SN - 0030-4018
VL - 518
JO - Optics Communications
JF - Optics Communications
M1 - 128371
ER -