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Advanced Search Results For "UNDERWATER acoustic communication"

1 - 10 of 1,665 results for
 "UNDERWATER acoustic communication"
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Precoded IM-OFDM-SS for Underwater Acoustic Communication.

Publication Type:Academic Journal

Source(s):Wireless Communications & Mobile Computing. 3/9/2022, p1-12. 12p.

Abstract:The nature of the multipath channel and the peak-to-average power ratio (PAPR) are regarded as the main challenges restricting the design of a multicarrier reliable underwater acoustic (UWA) communication. This paper proposes a new scheme, precoded ind...

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Supervised Contrastive Learning-Based Modulation Classification of Underwater Acoustic Communication.

Publication Type:Academic Journal

Source(s):Wireless Communications & Mobile Computing. 3/22/2022, p1-10. 10p.

Abstract:Modulation parameters are very significant to underwater target recognition. But influenced by the severe and time-space varying channel, most currently proposed intelligent classification networks cannot work well under these large dynamic environment...

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Research and Implementation of Turbo Coding Technology in High-Speed Underwater Acoustic OFDM Communication.

Publication Type:Academic Journal

Source(s):Journal of Robotics. 3/15/2022, p1-11. 11p.

Abstract:It is demonstrated that the fully parallel turbo decoding algorithm can achieve an approximate error correction decoding performance when 36 iterations are used and when the log-map algorithm with 6 iterations is used. By comparison, it is shown that i...

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Reinforcement Learning for Distributed Energy Efficiency Optimization in Underwater Acoustic Communication Networks.

Publication Type:Academic Journal

Source(s):Wireless Communications & Mobile Computing. 2/24/2022, p1-12. 12p.

Abstract:To solve the problems of poor quality of service and low energy efficiency of nodes in underwater multinode communication networks, a distributed power allocation algorithm based on reinforcement learning is proposed. The transmitter with reinforcement...

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Orthogonal Frequency Division Multiplexing Underwater Acoustic Communication System with Environmental Cognition Ability.

Publication Type:Academic Journal

Source(s):Security & Communication Networks. 8/10/2021, p1-12. 12p.

Abstract:In UWAC (underwater acoustic communication), UWA (underwater acoustic) channels change rapidly due to varying environment conditions. AMC (adaptive modulation and coding) is an efficient technique to improve system efficiency by changing transmission p...

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Joint Energy and Correlation Detection Assisted Non-Coherent OFDM-DCSK System for Underwater Acoustic Communications.

Publication Type:Academic Journal

Source(s):IEEE Transactions on Communications. Jun2022, Vol. 70 Issue 6, p3742-3759. 18p.

Abstract:A joint energy and correlation detection aided orthogonal frequency division multiplexing differential chaos shift keying (JECD-OFDM-DCSK) system is presented in this paper, where the reference and information-bearing signals of JECD-OFDM-DCSK are supe...

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Multi-body modelling and analysis of the motion platform for underwater acoustic dynamic communication.

Publication Type:Academic Journal

Source(s):Applied Mathematical Modelling. Sep2022, Vol. 109, p455-472. 18p.

Abstract:• The dynamic communication failure caused by attitude change of underwater glider is analyzed. • This study constructs the multi-body mathematical model of the network integrating an underwater glider and a wave glider. • A motion platform integrating...

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Multi‐user underwater acoustic communication using binary phase‐coded hyperbolic frequency‐modulated signals.

Publication Type:Academic Journal

Source(s):IET Communications (Wiley-Blackwell). Jul2022, Vol. 16 Issue 12, p1415-1427. 13p.

Abstract:Multi‐user communication traditionally uses either code division multiple access (CDMA) or time‐division multiple access schemes. The chirp signals resilience to multipath and the Doppler effect makes it suitable for underwater acoustic communication. ...

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Challenges and vision of wireless optical and acoustic communication in underwater environment.

Publication Type:Academic Journal

Source(s):International Journal of Communication Systems. Aug2022, Vol. 35 Issue 12, p1-23. 23p.

Abstract:Summary: Underwater Wireless Communication is a rapidly growing technology in the research domain. The researchers have been working towards the developments in underwater communication by investigating climatic changes, prediction of natural disasters...

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Generation of topologically diverse acoustic vortex beams with same divergence angle using discrete active helical arrays.

Publication Type:Academic Journal

Source(s):Journal of Applied Physics. 8/14/2021, Vol. 130 Issue 6, p1-6. 6p.

Abstract:In the process of multiplexing acoustic orbital angular momentum to realize underwater acoustic communication, the demodulation process is always affected by the larger divergence angle of higher-order acoustic vortex beams. To restrain the influences ...

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