Journal ArticleDOI
Signal demodulation method for underwater optical wireless communication by measuring the time interval between adjacent photons
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In this article, the authors proposed a signal demodulation method by measuring the time interval between adjacent photons and realized the recovery of the original signal from the discrete random pulse sequence output by the single-photon detector.Abstract:
We proposed a signal demodulation method by measuring the time interval between adjacent photons and realized the recovery of the original signal from the discrete random pulse sequence output by the single-photon detector. On this basis, a new communication system model is established by comprehensively considering the photon statistical characteristics of the emitted light field, the statistical distribution of adjacent photon time interval and the performance of the detector. Finally, an underwater optical wireless communication (UOWC) system was built. The effects of the average time interval between adjacent photons, baud rate and demodulation threshold in the time-slot on the system bit error rate (BER) were verified by experiments. The experimental results show that when the baud rate is 100 Kbps and the average time interval between adjacent photons is 111 ns, the BER of the system is 2.52 × 10−5.read more
Citations
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BER performance of nonzero dead time SPAD-based UWOC with signal accumulation over generalized gamma turbulence channels
TL;DR: In this article , a single-photon avalanche diode (SPAD) based UWOC with signal accumulation method is proposed to address the problem of low reception power even in a short communication distance.
Journal ArticleDOI
Application of visual mechanical signal detection and loading platform with super‐resolution based on deep learning
TL;DR: In this paper , a visual mechanical signal detection and loading platform with super-resolution based on deep learning is designed to improve the detection accuracy of mechanical signals, and the results demonstrate that the designed platform can display the superresolution mechanical signals through the visual interface.
Journal ArticleDOI
Anomaly Intrusion Detection of Wireless Communication Network-Based on Markov Chain Model
TL;DR: This method has the characteristics of simple calculation, low algorithm complexity, and easy online detection, and overcomes the disadvantage that the single-step Markov chain analysis and detection method cannot be strictly established.
References
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Underwater acoustic sensor networks: research challenges
TL;DR: In this paper, several fundamental key aspects of underwater acoustic communications are investigated and a cross-layer approach to the integration of all communication functionalities is suggested.
Journal ArticleDOI
Visible light communication: opportunities, challenges and the path to market
TL;DR: Large-scale commercialization of visible light communication devices will depend on both the development of robust and efficient engineering solutions, and the execution of incremental commercialization strategies.
Journal ArticleDOI
Underwater Optical Wireless Communication
Hemani Kaushal,Georges Kaddoum +1 more
TL;DR: An exhaustive overview of recent advances in underwater optical wireless communication is provided and a hybrid approach to an acousto-optic communication system is presented that complements the existing acoustic system, resulting in high data rates, low latency, and an energy-efficient system.
Journal ArticleDOI
A Survey of Underwater Optical Wireless Communications
TL;DR: This paper provides a comprehensive and exhaustive survey of the state-of-the-art UOWC research in three aspects: 1) channel characterization; 2) modulation; and 3) coding techniques, together with the practical implementations of UowC.
ReportDOI
Volume Scattering Functions for Selected Ocean Waters
TL;DR: In this paper, volume scattering functions for three general types of natural ocean waters have been obtained and are presented and are used for beam transmission in laboratory experiments using sea water, filtered fresh water, and artificial scattering and absorbing agents.