Using acoustic metrics to characterize underwater acoustic biodiversity in the Southern Ocean
Sign Up to like & getrecommendations! Published in 2019 at "Remote Sensing in Ecology and Conservation"
DOI: 10.1002/rse2.129
Abstract: Using acoustic metrics to characterize underwater acoustic biodiversity in the Southern Ocean Irene T. Roca & Ilse Van Opzeeland Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Ammerl€ander Heerstraße 231, 26129,… read more here.
Keywords: characterize underwater; acoustic metrics; metrics characterize; biodiversity ... See more keywords
Efficient cooperative ARQ protocols based on relay selection in underwater acoustic communication sensor networks
Sign Up to like & getrecommendations! Published in 2019 at "Wireless Networks"
DOI: 10.1007/s11276-018-1773-5
Abstract: The characteristics of the underwater acoustic communication such as large propagation delay, high bit error rate and half-duplex, bring challenges to traditional automatic repeat request (ARQ) schemes. In this paper, we propose cooperative ARQ protocols… read more here.
Keywords: acoustic communication; underwater acoustic; arq; relay ... See more keywords
Pilot Assisted MIMO-OFDM-IM Design for Time-Varying Underwater Acoustic Communications
Sign Up to like & getrecommendations! Published in 2021 at "Wireless Personal Communications"
DOI: 10.1007/s11277-021-08642-6
Abstract: This paper proposes a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing-index modulation (OFDM-IM) design for underwater acoustic communications. The proposed MIMO-OFDM-IM utilizes an equally spaced known data (pilot subcarriers). This feature assists in overcoming different… read more here.
Keywords: acoustic communications; time varying; pilot; ofdm design ... See more keywords
Secured transmission using trust strategy-based dynamic Bayesian game in underwater acoustic sensor networks
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Ambient Intelligence and Humanized Computing"
DOI: 10.1007/s12652-020-02418-9
Abstract: Cooperation among sensor nodes and the unreliability of acoustic channels are the significant challenges in underwater acoustic sensor networks (UASNs). In UASNs, the unreliability may results in high packet loss due to the high bit-error-rate… read more here.
Keywords: transmission; trust; sensor networks; trust strategy ... See more keywords
MIMO Underwater Acoustic Communication in Shallow Water with Ice Cover
Sign Up to like & getrecommendations! Published in 2019 at "China Ocean Engineering"
DOI: 10.1007/s13344-019-0023-7
Abstract: Although multiple-input multiple-output (MIMO) underwater acoustic (UWA) communication has been intensively investigated in the past years, existing works mainly focus on open-water environment. There is no work reporting MIMO acoustic communication in under-ice environment. This… read more here.
Keywords: acoustic communication; water; underwater acoustic; communication ... See more keywords
A modulation method of parametric array for underwater acoustic communication
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.07.032
Abstract: Abstract Focusing on the potential value of narrow directivity of parametric sonar in underwater acoustic communication, a broadband recursive filtering modulation method is proposed in this paper to generate parametric array excitation signal. The idea… read more here.
Keywords: underwater acoustic; parametric array; method; acoustic communication ... See more keywords
Blind deconvolution based equalizer for underwater acoustic communications
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.01.022
Abstract: Abstract Reliable and efficient underwater acoustic communications are challenging problems because of complex underwater channel properties. With the recent advancements in underwater technologies, there is a need for a robust underwater communication system which can… read more here.
Keywords: acoustic communications; underwater acoustic; blind deconvolution; deconvolution based ... See more keywords
An analytical formulation for the underwater acoustic radiation of a cylindrical shell with an internal flexural floor based on the reciprocity theorem
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.04.017
Abstract: Abstract An analytical formulation is proposed in this work to evaluate the underwater acoustic radiation of an infinite cylindrical shell containing an internal flexural floor, based on the reciprocity theorem which is applicable to linear… read more here.
Keywords: underwater acoustic; cylindrical shell; shell; acoustic radiation ... See more keywords
Stochastic resonance with reinforcement learning for underwater acoustic communication signal
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2020.107688
Abstract: Abstract In the underwater acoustic communication (UAC), the receive signal is submerged in the heavy noise which make it hard to be detected. Stochastic resonance (SR) utilizes noise instead of eliminating it to improve the… read more here.
Keywords: system; stochastic resonance; reinforcement learning; acoustic communication ... See more keywords
Frequency response of an underwater acoustic focusing composite lens
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2020.107692
Abstract: Abstract Acoustic lenses composed of metamaterials are used as highly anisotropic subwavelength media and have broad applications in a wide range of industrial areas. As reported in recent research, an acoustic lens composed of a… read more here.
Keywords: frequency; underwater acoustic; intensity; acoustic lens ... See more keywords
OTFS underwater acoustic communications based on passive time reversal
Sign Up to like & getrecommendations! Published in 2022 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108386
Abstract: Abstract Orthogonal time-frequency-space (OTFS) is a new two-dimensional (2D) modulation technique that offers reliable communications over time-varying channels. Due to the characteristics of underwater acoustic (UWA) channels, the computational complexity of traditional OTFS receivers is… read more here.
Keywords: otfs underwater; complexity; passive time; time ... See more keywords