underwater acoustic communications network
Implementation of Neighbor Discovery Protocol for Underwater Acoustic Communications
... The proposed neighbor discovery uses the directional sectored antennas for the transmission and reception of the frames. The best estimate of received signals is computed using the various Direction of Arrival (DOA) ...
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Improving Network Life Time using High Populated Harmony Search Algorithm in Distributed Acoustic Sensor
... Here we have added a contention-based average access power protocol along K-mean algorithm in AODV for underwater acoustic networks. With cautious design, AODV manages to enhance handshake efficiency along ...
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Energy Efficient Reconfigurable MAC Protocol for Underwater Acoustic Sensor Network
... The research presented here, therefore, has segregated this contention resolution into two different phases and proposes a novel two-phase contention resolution technique. This technique enables multi-hop ...
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Simulation of Multimodal Optical and Acoustic Communications in Underwater Networks
... the network performance, and may involve several layers of the protocol stack, such as the Medium Access Control (MAC), data-link, and routing ...for acoustic networks exist, that manage ...
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A Review on Underwater Acoustic Sensor Networks: Perspective of Internet of Things
... to acoustic communication modules deployed ...of underwater sensor nodes whose acoustic modems can sense water quality, pressure, temperature, presence of any metal, chemical and biological elements, ...
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WaterCom A Multilevel, Multipurpose Underwater Communications Test Platform
... Underwater Communications is very much an experimental science because of the complex medium - the water - and its unpredictable propagation properties, thus mandating ex- periments to validate ...of ...
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Collision Tolerant and Collision Free Packet Scheduling for Underwater Acoustic Network Localization
... Due to the symmetry of the linear wave equation, if the sound transmitted from one location is received at other locations, reversed and retransmitted; it focuses back at the original source location. This is the ...
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Internet of Underwater Things: Underwater Acoustic Speech Processing, Real Time Sea Pollution Monitoring, Oceanographic System and Monitoring Sensible Parameters in Deep Sea for Underwater Autonomous Vehicle and Disaster Management
... automatic underwater acoustic communications using piezoelectric based vibration sensor and, monitoring and controlling system for early detection of physical parameters like Temperature of ocean, ...
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[N197.Ebook] Download Ofdm For Underwater Acoustic Communications By Shengli Zhou Zhaohui Wang.pdf
... includes: Underwater acoustic channel characteristics/OFDM basics/Peak-to-average-ratio control/Detection and Doppler estimation (Doppler scale and CFO)/Channel estimation and noise estimation/A ...
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Challenges for Efficient Communication in Underwater Acoustic Sensor Network
... Underwater acoustic communications are mainly influenced by path loss, noise, multi-path, Doppler spread, and high and variable propagation ...the acoustic channel, and make the available ...
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Cooperative OFDM Underwater Acoustic Communications with Limited Feedback: Part I
... Cooperative communications have been proved to be a promising technique in next generation wireless communication and network ...cooperative communications and limited feedback in underwater ...
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EARQ: ENERGY AWARE ROUTING FOR REAL-TIME SENSOR NETWORKS
... Underwater wireless sensor networks consist of a certain number of sensors and vehicles that interact to collect data and perform collaborative ...because underwater communications are severely ...
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Energy Efficient and Position Aware Routing for Auv Aided Underwater Acoustic Sensor Network
... monitoring underwater communications with respect to routing, MAC and Forward Error Correction (FEC) ...The underwater acoustic sensor node equip with pressure sensor to gather depth ...
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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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Review on an Underwater Acoustic Networks
... of underwater acoustic network the current research is focus on communication between various remote instruments to improve the high-rate reliable communication, energy efficiency and ...robustness. ...
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Analysis on Data Transmission in Underwater Acoustic Sensor Network for Complex Environment
... © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 857 ments over a given territory. To accomplish a goal, sensors and vehicles self-arrange in a self-governing system which can adjust to ...
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Advanced OFDM Receivers for Underwater Acoustic Communications
... In order to test the effectiveness of the proposed adaptive filter in an UWA channel, we ap- plied the NLMS adaptive filter and the six RLS adaptive filters discussed in Section 6.3.1 to channel estimation in the ...
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A Hybrid ARQ scheme combining erasure codes and selective retransmissions for reliable data transfer in underwater acoustic sensor networks
... of total number of packets sent in the network for the given scenario. In Fig. 5, we plot this quantity as a func- tion of hop count while the average erasure rate across each link between the source-destination ...
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Experimental Assessment of Different Receiver Structures for Underwater Acoustic Communications over Multipath Channels
... Abstract: Underwater communication channels are often complicated, and in particular multipath propagation may cause intersymbol interference ...of communications using PPC processing. Keywords: ...
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Anchorless Underwater Acoustic Localization
... emitting acoustic signals without using any anchor nodes or receiving ...of acoustic sources such as marine mammals or underwater vehicles, for which the cost of covering a broad area with multiple ...
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