Research on performance enhancement scheme of optical camera communication based on adaptive exponential weighted moving average algorithm

When the COMS camera of optical camera communication (OCC) system acquired the information image, the grayscale value of pixels fluctuated due to the influence of blooming effect and light noise, so that the data logic could not be correctly judged by the decision threshold, which affected the bit e...

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Vydáno v:Microwave and optical technology letters Ročník 66; číslo 7
Hlavní autoři: Jia, Wenyang, Tian, Ming, Feng, Jinliang
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Wiley Subscription Services, Inc 01.07.2024
Témata:
Adaptive algorithms
adaptive exponential weighted moving average
Bit error rate
Cameras
Data acquisition
Data processing
Demodulation
Error analysis
Error correction
Error correction & detection
Gray scale
grayscale value fluctuation
grayscale value matrix
Image acquisition
Image enhancement
Noise threshold
optical camera communication
Performance degradation
Performance enhancement
ISSN:0895-2477, 1098-2760
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Shrnutí:When the COMS camera of optical camera communication (OCC) system acquired the information image, the grayscale value of pixels fluctuated due to the influence of blooming effect and light noise, so that the data logic could not be correctly judged by the decision threshold, which affected the bit error rate (BER) performance  transmission distance and data rate, and degraded the system performance. In this paper, the adaptive exponential weighted moving average algorithm  is proposed, and the optimal grayscale value matrix of signal demodulation is verified by experiment, so as to reduce the fluctuation of grayscale value and improve the performance of OCC system. The experimental results show that for data processing and analysis based on ZYNQ7020 experimental platform, a 7% forward error correction（BER = 3.8 × 10−3）requirements can be satisfied at 150 cm when the data rate is 3 Kbps, and a 7% forward error correction（BER = 3.8 × 10−3）requirements can be satisfied at 100 cm when the data rate is 5 Kbps.
Bibliografie:ObjectType-Article-1
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ISSN:0895-2477
1098-2760
DOI:10.1002/mop.34185