Abstract
In this work, we propose a multiple inputs multiple outputs (MIMO) non-line-of-sight (NLOS) optical camera communication (OCC) system with multi-level pulse width modulation (MPWM) and difference-based pulse width recognition (DBPWR) schemes. The MPWM signals transmitted over a NLOS link are recovered 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 3.6 kb/s is experimentally demonstrated for more than 2 m NLOS link using the proposed MIMO OCC system, which is sufficient in many Internet of things applications.
Original language | English |
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Title of host publication | 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) |
Publisher | IEEE |
ISBN (Electronic) | 9781665410441 |
ISBN (Print) | 9781665410458 |
DOIs | |
Publication status | Published - 20 Jul 2022 |