underwater acoustic communication
Research of Underwater Acoustic Communication Signal Modulation Recognition and Its Implementation
... Describes the extraction of common underwater acoustic communication signals and signal characteristic parameters, analyzes the underwater acoustic channel characteristics infl[r] ...
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Robust minimum energy wireless routing for underwater acoustic communication networks
... Robust Minimum Energy Wireless Routing for Underwater Acoustic Communication Networks Brooks L. Reed, Milica Stojanovic, Urbashi Mitra and Franz S. Hover. Abstract— Marine robots are an increasingly ...
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Research and Implementation of OFDM Underwater Acoustic Communication under Time-varying Channel
... In this paper, OFDM underwater acoustic communication and its hardware implementation under time-varying channel are studied in combination with OFDM, time-frequency different[r] ...
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Design and Simulation of a Secure and Robust Underwater Acoustic Communication System in the Persian Gulf
... In the selection of an equalizer we consider convergence rate, processing complexity and the ability to track changes in the channel characteristics. There are a vari- ety of algorithms which have been investigated to be ...
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Modified MAC Protocol for low overhead and long delay Underwater Acoustic Communication
... Abstract—Efficient underwater networking is still a challenging issue due to its physical limitations, like long propagation ...delay Underwater Acoustic ...
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Intelligent and Secure Underwater Acoustic Communication Networks
... Chapter 2 studies adaptive transmission in an UWA point-to-point communication system that operates on an epoch-by-epoch basis for a long term. A fixed amount of information bits periodically arrive at the ...
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OFDM along with Steering Sinusoids for Underwater Acoustic Communication
... for acoustic communication underwater, Orthogonal Frequency Division Multiplexing (OFDM) still happens to be the best and an extremely effective modulation ...the underwater acoustic ...
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A chaotic spread spectrum system for underwater acoustic communication
... proposed communication method has good Doppler fre- quency shift resistance ...conventional communication systems in or- der to decrease ...proposed communication scheme has better perfor- mance in ...
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Analysis of and techniques for adaptive equalization for underwater acoustic communication
... Upon reflection, this result is not too surprising because the MMSE feedback section removes all ISI, so inverting the first channel coefficient is the optimal equalizer[r] ...
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Direct-form adaptive equalization for underwater acoustic communication
... including underwater communica- tion, mobile radio [40] and magnetic disk recording technology [9], for ...to underwater communication systems and how they tie in with the work presented ...
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Doppler-Resilient Schemes for Underwater Acoustic Communication Channels.
... Underwater communication networks where nodes are able to communicate in real-time by means of wireless links are preferred over the wire-line networks and the traditional sensor networks usually deployed ...
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Advanced signal processing techniques for underwater acoustic communication networks
... modeling underwater acoustic transmission with moving transmitter/receiver has been ...an acoustic field compu- tation method. Different acoustic field computation methods can be used in the ...
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Research of Underwater Acoustic Communication System based on Linear Frequency Modulated Signal
... Compared with DSSS, M-ary cyclic shift keying will has a higher data rate, but its robustness declined sharply when the channel has a serious Doppler effect.. In order to s[r] ...
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Fractional Cosine Transform (FrCT)-Turbo based OFDM for underwater acoustic communication
... A novel DFrCT-Turbo system based on the hybrid use of the Discrete Fractional Cosine Transform (DFrCT), Tikhonov regularization based turbo MMSE equalization and low compl[r] ...
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Fractional fourier based sparse channel estimation for multicarrier underwater acoustic communication system
... channel via Basis Expansion coefficients and different basis, such as Complex Exponential basis (CE-BEM)[5] and polynomial basis (P-BEM) [6]. In [7], it is shown that DPS-BEM, which is employed to model the time variant ...
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Fractional fourier based sparse channel estimation for multicarrier underwater acoustic communication system
... channel via Basis Expansion coefficients and different basis, such as Complex Exponential basis (CE-BEM)[5] and polynomial basis (P-BEM) [6]. In [7], it is shown that DPS-BEM, which is employed to model the time variant ...
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Doppler compensation algorithms for DSP-based implementation of OFDM underwater acoustic communication systems
... B coh , 1 τ max . (2.22) The coherence bandwidth is a measure of the frequency selectivity in a multipath propagation. The frequency non selective fading is the range over which the chan- nel remains almost constant in ...
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A Secure Communication Suite for Underwater Acoustic Sensor Networks
... We have compared the ADR when security is disabled to the ADR when security is enabled. The results are reported in Figure 10. In particular, the figure shows the ADR for nodes FN2 and FLG2. We note that the ADR when ...
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Challenges for Efficient Communication in Underwater Acoustic Sensor Network
... OF ACOUSTIC COMMUNICATIONS Underwater acoustic communications are mainly influenced by path loss, noise, multi-path, Doppler spread, and high and variable propagation ...the acoustic channel, ...
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Design of an Acoustic Communication System Based on FHMA for Multiple Underwater Vehicles
... of underwater acoustic comm- unication system based on tamed spread spectrum and FHMA for multiple underwater ...in underwater acoustic channel, two key tech- niques of tamed spread ...
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