Underwater Acoustic Channel
Design of Underwater Acoustic Channel Model for OFDM Communication System
... for Underwater acoustic channel model is been achieved in the research ...work. Underwater channel characteristics like Multipath parameters, Attenuation parameters and ambient noise ...
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Optimum Bit Rate for Image Transmission over Underwater Acoustic Channel
... for underwater acoustic (UWA) channel because it is inherently designed for image encoding, and the associated redundancy can be managed conveniently for communications and its capability to adapt to ...
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Review Article: Multicarrier Communication for Underwater Acoustic Channel
... in underwater acoustic communi- cations to overcome the bandwidth limitation of undersea channel ...Long acoustic mul- tipath, however, limits the applicability of MIMO chan- nel estimation ...
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The Effect Of Convolution Code Structural Property To Reduce The Bit Error Rate In Underwater Acoustic Channel
... [15] Samar Kaddouri, Pierre-Philippe J. Beaujean, Pierre-Jean Bouvet and Gaultier Real, ―Least square and trended Doppler estimation in fading channel for high-frequency underwater acoustic ...
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Survey on Various Types of Noise and Methods for Noise Removal
... enable underwater communications. High-speed communication in the underwater acoustic channel is challenging due to limited bandwidth, extended multi-path, refractive properties of the ...
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Design of an Acoustic Communication System Based on FHMA for Multiple Underwater Vehicles
... organisms, acoustic wave will reach the receiving part along several different paths after it is ...of underwater acoustic ...of Underwater Acoustic Channel ...
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A new joint channel equalization and estimation algorithm for underwater acoustic channels
... resources, underwater communication is playing a more critical role in both military and civilian ...in underwater channels, sound wave becomes the only effective com- munication ...restrained ...
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Need and Role of Underwater Acoustic Sensor Networks
... The channel impulse response is not only spatially varied but also temporarily ...The channel characteristics vary with time and highly depend on the location of the transmitter and ...the channel ...
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Review on an Underwater Acoustic Networks
... MAC layer: In network packets are move from one layer to another layer because of MAC layer. Underwater nodes have extremely-limited bandwidth, long delay so they share available resources.Medium access control ...
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An Underwater Acoustic Implementation of DFT-Spread OFDM
... In DFT-spread OFDM, data symbols are spread by DFT, and this is followed by ordinary OFDM processing. Figure 1 shows the block diagram of the DFT-spread OFDM system. The input data is first mapped into a QPSK ...
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Low Complexity Iterative Receiver Design for Shallow Water Acoustic Channels
... shallow underwater acoustic channel (UAC) is proposed using a decision feedback equalizer (DFE) and employing bit-interleaved coded modulation with iterative decoding (BICM-ID) in conjunction with ...
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Cooperative Authentication in Underwater Acoustic Sensor Networks
... of underwater acoustic com- munications (UWAC) for both industrial and military operations, there is a need to ensure communication ...by underwater acoustic networks (UWANs), which are often ...
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A Survey on Underwater Acoustic Sensor Networks: Perspectives on Protocol Design for Signaling, MAC and Routing
... in underwater acoustic channels, in fact, the features of underwater acoustic channel have caused these outputs in practical ...
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MAC protocol for underwater acoustic sensor network based on belied state space
... on channel occupancy and data arrival rate, using the state transition probability and Markov al- gorithm, and model an underwater channel as the be- lief state space using the allocation process, ...
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Fractional fourier based sparse channel estimation for multicarrier underwater acoustic communication system
... sparse channel estimation based on fractional fourier transform ...of channel frequency matrix based on FrFT concentrates along the diagonal than that of FT, leading to less ICI and coherence between ...
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Performance Evaluation of Diversity Techniques in IDMA Scheme for Next Generation (4G) in Underwater Wireless Communication
... Several systems are designed and manufactured commercially and mostly based on analogue technology and employing Single Side Band (SSB) modulation. Technically all these systems are behind the advanced digital technology ...
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Anchorless Underwater Acoustic Localization
... of acoustic signals under water is typi- cally subject to significant multipath ...an acoustic propagation model ...of acoustic channel fingerprints measured in the localization area ...of ...
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Title: Acoustic Underwater Wireless Sensor Networks: Channel Gain and Channel Communication
... Slotted FAMA[35] is established on a channel admission control shouted Floor Buy Several Admission (FAMA). It merges both messenger detecting (CS) and a dialogue amid the basis and receiver prior to data ...
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Acoustic command system
... Application of the Acoustic Command At the present time the command unit is being used to switch acoustic beacons, release underwater buoy systems, and operate the opening and closing me[r] ...
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Development of universal software radio peripheral amplifier for underwater acoustic platform using software defined radio
... Acoustic communications are the typical physical layer technology in underwater systems. Wire communications are difficult to deploy and are unsuitable for moving. In fact, radio waves suffer from such high ...
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