Design of Underwater Acoustic Modems through High Performance DSPs

2014 ◽  
Author(s):  
Lijun Xu ◽  
Shefeng Yan
Keyword(s):  
High Performance ◽  
Underwater Acoustic

Analysis of a High-Performance MAC Protocol for Underwater Acoustic Networks

2014 ◽  
Vol 39 (1) ◽  
pp. 74-89 ◽  
Author(s):  
Shiraz Shahabudeen ◽  
Mehul Motani ◽  
Mandar Chitre
Keyword(s):  
High Performance ◽  
Mac Protocol ◽  
Underwater Acoustic ◽  
Acoustic Networks ◽  
Underwater Acoustic Networks

scholarly journals Implementation Patterns of AquaSim for Simulation of Underwater Acoustic Wireless Sensor Networks

2021 ◽  
Vol 1 (1) ◽  
pp. 84-92
Author(s):  
Karim Hashem Kreidi
Keyword(s):  
Sensor Networks ◽  
High Performance ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Underwater Sensor Networks ◽  
Underwater Acoustic ◽  
Main Challenge ◽  
Wireless Environment ◽  
Underwater Acoustic Network ◽  
Social Applications

Now days, a number of corporate as well as social applications are connected with wireless technologies which are covered under the domain of Internet of Things (IoT) and Cloud of Things (CoT). To work with the development and implementation of these scenarios, there is need of high performance costly gadgets which are difficult for the self finance researchers and small organizations. To cope up with the financial aspects of developing and getting the results from advanced wireless environment, the use of simulators and software libraries is done. In wireless environment, the segment of Underwater Wireless Sensor (UWSN) or Underwater Acoustic Network (UAN) is quite prominent which are used for the underwater applications including Military, Naval and Underwater Surveillance. Underwater sensor networks are famous for researchers and engineers in wireless technology. This field offers a lot of academic work in different disciplines. The main challenge of this UWSN is the energy saving for sensor nodes. For this cause, the location of sensor nodes shifts about regularly. There are several algorithms for energy production and collection, but this area is still in need of study due to political and national security concerns.

scholarly journals Design of underwater acoustic sensor communication systems based on software-defined networks in big data

2017 ◽  
Vol 13 (7) ◽  
pp. 155014771771967 ◽  
Author(s):  
Jianping Wang ◽  
Lijuan Ma ◽  
Wei Chen
Keyword(s):  
Big Data ◽  
Sensor Networks ◽  
High Performance ◽  
Acoustic Sensor ◽  
Software Defined Network ◽  
Control Plane ◽  
Underwater Acoustic Sensor Networks ◽  
Underwater Acoustic ◽  
Acoustic Sensor Networks ◽  
Data Plane

The application based on big data is an important development trend of underwater acoustic sensor networks. However, traditional underwater acoustic sensor networks rely on the hardware infrastructure. The flexibility and scalability cannot be satisfied greatly. Due to the low performance of underwater acoustic sensor networks, it creates significant barriers to the implementation of big data. Software-defined network is regarded as a new infrastructure of next-generation network. It offers a novel solution for designing underwater acoustic sensor networks of high performance. In this article, a software-defined network–based solution is proposed to build the architecture of underwater acoustic sensor networks in big data. The design procedures of the data plane and control plane are described in detail. In the data plane, the works include the hardware design of OpenFlow-based virtual switch and the design of the physical layer based on software-defined radio. The hierarchical clustering technology and the node addressing techniques for designing media access control layer are well introduced. In the control plane, exploiting the hardware of the controller and designing the core module of controllers are presented as well. Through the study, it is supposed to maximize the capacity of underwater acoustic sensor networks, reduce the management complexity, and provide critical technical support for the high-performance underwater acoustic sensor networks.

Underwater Acoustic Absorption of Composite Anechoic Layers With Inner Holes

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Changzheng Ye ◽  
Xuewei Liu ◽  
Fengxian Xin ◽  
Tian Jian Lu
Keyword(s):  
Theoretical Model ◽  
Material Properties ◽  
High Performance ◽  
Numerical Study ◽  
High Order Mode ◽  
Variable Cross Section ◽  
Geometrical Parameters ◽  
Variable Cross ◽  
Underwater Acoustic ◽  
Rubber Layer

A combined theoretical and numerical study is carried out to quantify the influence of material properties (e.g., real part and loss factor of Young’s modulus, material density) and geometrical parameters (e.g., layer thickness, height of hole) on the sound absorption performance of an underwater rubber layer containing periodically distributed axial holes. A theoretical model is developed based on the method of transfer matrix as well as the concept of equivalent layering of holes with variable cross section. Numerical simulations with the method of finite elements are subsequently carried out to validate the theoretical model, with good agreement achieved. Physical mechanisms underlying the enhanced acoustic performance of the anechoic layer as a result of introducing the periodic holes are explored in terms of the generated transverse waves and the high-order mode of vibration. The results presented are helpful for designing high-performance underwater acoustic layers with periodically distributed cavities by tailoring relevant material properties and geometrical parameters.

scholarly journals GFDM Based Error Correcting Codes in Underwater Acoustic Channel

2020 ◽  
Vol 9 (4) ◽  
pp. 1353-1356
Keyword(s):  
High Performance ◽  
Convolutional Code ◽  
Turbo Code ◽  
Error Correcting Code ◽  
Error Correcting Codes ◽  
Underwater Acoustic Communication ◽  
Concatenated Codes ◽  
Underwater Acoustic ◽  
Rs Code ◽  
Concatenated Code

In this paper underwater acoustic communication system based on Coded GFDM (CGFDM) is simulated and the performances are analyzed using different error-correcting codes. And also the parameter selection principle of error-correcting code is evaluated. To build practical and high performance CGFDM system the error-correcting codes from low to relatively high computational complexity, such as, convolutional code, RS code, serial concatenated code of RS code plus convo1utional code and turbo code is evaluated. The parameters of code rate, code length, generation polynomial, interleaving and interleaving matrix length are all considered and analyzed elaborately. Finally, the simulating experiments proved that there are some relative1y low complexities systems based on serial concatenated codes of RS code plus convolutional code that are able to gain better performance as the systems based on turbo code.

Use of high performance computing resources for underwater acoustic modeling.

2009 ◽  
Vol 126 (4) ◽  
pp. 2250
Author(s):  
Anca M. Niculescu ◽  
Natalia A. Sidorovskaia ◽  
Peter Achi ◽  
Arslan M. Tashmukhambetov ◽  
George E. Ioup ◽  
...  
Keyword(s):  
High Performance Computing ◽  
High Performance ◽  
Acoustic Modeling ◽  
Underwater Acoustic ◽  
Performance Computing
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