Huang Zheng, He Jing, Yu Ke, Li Wei
Appl Opt. 2021 Apr 20;60(12):3308-3313. doi: 10.1364/AO.419897.
An efficient demodulation scheme based on adaptive clock extraction and mapping-sampling is proposed and experimentally demonstrated for mobile optical camera communication (OCC) systems. For the proposed scheme, it can effectively improve the system performance in mobile OCC. The bit error rate (BER) performance of the proposed scheme and the other existing schemes are compared. The experimental results show that under the speed from 0.4 m/s to 0.7 m/s, it can significantly improve the system performance using the adaptive clock extraction and the mapping-sampling scheme in mobile OCC systems. Compared with the length estimation scheme, when the speed is 0.7 m/s, the BER can be improved from 9.14×10 to 3.16×10 at the exposure time of 1/12,000 s using the proposed scheme. In addition, the required memory and processing time of the proposed scheme are analyzed, which indicates that the proposed scheme has negligible influence on memory overhead and computational complexity.
针对移动光学相机通信（OCC）系统，提出了一种基于自适应时钟提取和映射采样的高效解调方案，并进行了实验验证。对于所提出的方案，它可以有效提高移动OCC系统的性能。比较了所提方案与其他现有方案的误码率（BER）性能。实验结果表明，在0.4 m/s至0.7 m/s的速度下，使用自适应时钟提取和映射采样方案可以显著提高移动OCC系统的性能。与长度估计方案相比，当速度为0.7 m/s时，在所提方案下，曝光时间为1/12,000 s时，误码率可从9.14×10提高到3.16×10。此外，分析了所提方案所需的内存和处理时间，这表明所提方案对内存开销和计算复杂度的影响可忽略不计。
