Underwater acoustic transmission of high‐rate digital data

1994 ◽  
Vol 96 (6) ◽  
pp. 3812-3813
Author(s):  
M. Atassi
Keyword(s):  
Digital Data ◽  
High Rate ◽  
Acoustic Transmission ◽  
Underwater Acoustic

Underwater acoustic transmission of low-rate digital data

Ultrasonics ◽  
1986 ◽  
Vol 24 (4) ◽  
pp. 183-188 ◽  
Author(s):  
D.C. Brock ◽  
S.C. Bateman ◽  
B. Woodward
Keyword(s):  
Digital Data ◽  
Acoustic Transmission ◽  
Underwater Acoustic ◽  
Low Rate

Direct Mapping Based FBMC-LDPC Advanced Underwater Acoustic Transmission Scheme for Data Signals

2020 ◽  
pp. 597-603
Author(s):  
Chin-Feng Lin ◽  
Tsung-Jen Su ◽  
Shun-Hsyung Chang ◽  
Ivan A. Parinov ◽  
Sergey N. Shevtsov
Keyword(s):  
Acoustic Transmission ◽  
Transmission Scheme ◽  
Underwater Acoustic ◽  
Direct Mapping

scholarly journals High-rate wireless data communications: An underwater acoustic communications framework at the physical layer

1996 ◽  
Vol 2 (6) ◽  
pp. 449-485 ◽  
Author(s):  
Anthony G. Bessios ◽  
Frank M. Caimi
Keyword(s):  
Real Time ◽  
High Speed ◽  
High Rate ◽  
Statistical Decision Theory ◽  
Data Communications ◽  
Acoustic Communications ◽  
Statistical Decision ◽  
Theoretical Formulation ◽  
Underwater Acoustic ◽  
Detection Techniques

A variety of signal processing functions are performed by Underwater Acoustic Systems. These include: 1) detection to determine presence or absence of information signals in the presence of noise, or an attempt to describe which of a predetermined finite set of possible messages{mi,i,...,M}the signal represents; 2) estimation of some parameterθˆassociated with the received signal (i.e. range, depth, bearing angle, etc.); 3) classification and source identification; 4) dynamics tracking; 5) navigation (collision avoidance and terminal guidance); 6) countermeasures; and 7) communications. The focus of this paper is acoustic communications.There is a global current need to develop reliable wireless digital communications for the underwater environment, with sufficient performance and efficiency to substitute for costly wired systems. One possible goal is a wireless system implementation that insures underwater terminal mobility. There is also a vital need to improve the performance of the existing systems in terms of data-rate, noise immunity, operational range, and power consumption, since, in practice, portable high-speed, long range, compact, low-power systems are desired.We concede the difficulties associated with acoustic systems and concentrate on the development of robust data transmission methods anticipating the eventual need for real time or near real time video transmission. An overview of the various detection techniques and the general statistical digital communication problem is given based on a statistical decision theory framework. The theoretical formulation of the underwater acoustic data communications problem includes modeling of the stochastic channel to incorporate a variety of impairments and environmental uncertainties, and proposal of new compensation strategies for an efficient and robust receiver design.

The Application of RAKE Receiving Technology in the Underwater SS Communication

2014 ◽  
Vol 513-517 ◽  
pp. 4248-4252 ◽  
Author(s):  
Yun Hang Zhu ◽  
Zhi Hui Deng
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
High Reliability ◽  
Underwater Acoustic Communication ◽  
Technical Solution ◽  
Acoustic Transmission ◽  
Long Distance ◽  
Underwater Acoustic ◽  
Underwater Wireless Communication ◽  
Spreading Spectrum

In recent years, the strategic significance of the oceans is growing as well as its research and development needs. The underwater wireless communication is becoming more and more important. The underwater acoustic communication is one of the few mediums which can conduct the underwater transmission over a long distance, and the multipath effect is the major obstacle of affecting the systems high speed and high reliability. The characteristics of underwater acoustic fading and coherent multi-path channel are studied, and the model of underwater acoustic spreading spectrum (SS) communication system is established. The affect of coding technique on the systems performance are analyzed in detail. The improved RAKE receiving technical solution is put forward, whose simulation analysis and data in different combining ways are given. It is proved that the scheme can better solve the problem of multipath interference in underwater acoustic transmission.

Software-defined underwater acoustic networks: toward a high-rate real-time reconfigurable modem

2015 ◽  
Vol 53 (11) ◽  
pp. 64-71 ◽  
Author(s):  
Emrecan Demirors ◽  
George Sklivanitis ◽  
Tommaso Melodia ◽  
Stella N. Batalama ◽  
Dimitris A. Pados
Keyword(s):  
Real Time ◽  
High Rate ◽  
Underwater Acoustic ◽  
Acoustic Networks ◽  
Underwater Acoustic Networks
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