Advances and Trends in Channel Codes for Underwater Acoustic Communications [PDF]
Journal of Marine Science and Engineering, 2023 Due to the simultaneous existence of severe difficulties caused by multi-path, Doppler, and environmental noise caused by underwater acoustic channels, designing a stable and reliable underwater acoustic communication system (UWACS) is a challenging task.
Yanfeng Zhao +4 more
openalex +2 more sources
M-ary Cyclic Shift Keying Spread Spectrum Underwater Acoustic Communications Based on Virtual Time-Reversal Mirror [PDF]
Sensors, 2019 Underwater acoustic communications are challenging because channels are complex, and acoustic waves when propagating in the ocean are subjected to a variety of interferences, such as noise, reflections, scattering and so on.
Feng Zhou +5 more
doaj +2 more sources
Time Diversity Passive Time Reversal for Underwater Acoustic Communications [PDF]
IEEE Access, 2019 Underwater acoustic signal propagation is greatly affected by source-receiver motion, surface variations, and water column variabilities, which make the underwater acoustic communications very challenging.
Salman I. Siddiqui, Hefeng Dong
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Accurate Channel Estimation and Adaptive Underwater Acoustic Communications Based on Gaussian Likelihood and Constellation Aggregation [PDF]
Sensors, 2022 Achieving accurate channel estimation and adaptive communications with moving transceivers is challenging due to rapid changes in the underwater acoustic channels.
Liang Wang +5 more
doaj +2 more sources
Hadamard–Viterbi Joint Soft Decoding for MFSK Underwater Acoustic Communications
Remote Sensing, 2022 Multiple Frequency-Shift Keying (MFSK) has been used widely for underwater acoustic communications due to its low complexity and channel robustness.
Fei-Yun Wu +3 more
doaj +2 more sources
Channel Emulator Framework for Underwater Acoustic Communications [PDF]
Applied Sciences, 2023 In this paper, we develop a tractable mathematical model and an emulation framework for communicating information through water using acoustic signals.
Indrakshi Dey, Nicola Marchetti
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Effective SNR Mapping and Link Adaptation Strategy for Next-Generation Underwater Acoustic Communications Networks: A Cross-Layer Approach [PDF]
IEEE Access, 2019 Interest in the study of next-generation underwater sensor networks for ocean investigation has increased owing to developing concerns over its utilization in areas, such as oceanography, commercial operations in maritime areas, and military surveillance.
Ishtiaq Ahmad, Kyunghi Chang
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Generalized spatial modulation for underwater backscatter communication using acoustic metasurfaces [PDF]
Scientific ReportsDesign of a long-range, high data-rate and ultra low power underwater communications system is crucial for a variety of applications. However, this task is challenging because of the underwater channel dynamics, propagation characteristics and power ...
Ashwini H. Raghavendra +2 more
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Adaptive Packet Coding for Reliable Underwater Acoustic Communications [PDF]
Remote Sensing, 2022 This work investigates adaptive random linear packet coding (RLPC) for reliable underwater acoustic (UWA) communications. Our goal is to minimize the total transmission time of data blocks by adjusting the packet coding rate.
Lianyou Jing +3 more
doaj +2 more sources
Acoustic Parametric Signal Generation for Underwater Communication [PDF]
Sensors, 2018 This paper presents a study of different types of parametric signals with application to underwater acoustic communications. In all the signals, the carrier frequency is 200 kHz, which corresponds to the resonance frequency of the transducer under study ...
María Campo-Valera +6 more
doaj +4 more sources