Adaptive beamforming for underwater acoustic communication in shallow water

1997 ◽  
Vol 102 (5) ◽  
pp. 3119-3119 ◽  
Author(s):  
Lester R. LeBlanc ◽  
Jochen R. Alleyne ◽  
Pierre P. Beaujean
Keyword(s):  
Shallow Water ◽  
Acoustic Communication ◽  
Adaptive Beamforming ◽  
Underwater Acoustic Communication ◽  
Underwater Acoustic

Experimental Multipath Delay Profile of Underwater Acoustic Communication Channel in Shallow Water

2016 ◽  
Vol 2 (2) ◽  
pp. 351 ◽  
Author(s):  
Yasin Yousif Al_Aboosi ◽  
Ahmad Zuri Sha'ameri
Keyword(s):  
Shallow Water ◽  
Acoustic Communication ◽  
Multipath Propagation ◽  
Water Channel ◽  
Underwater Acoustic Communication ◽  
Communication Performance ◽  
Underwater Acoustic ◽  
Research Fields ◽  
Different Depths ◽  
Major Factors

<p>The shallow water channel is an environment that is of particular interest to many research fields. An underwater acoustic channel is characterized as a multipath channel. Time-varying multipath propagation is one of the major factors that limit the acoustic communication performance in shallow water. This study conducts two underwater acoustic experiments in Tanjung Balau, Johor, Malaysia. A transducer and a hydrophone are submerged at different depths and separated by different distances. Linear frequency modulated (LFM) pulses are chosen as the main transmit signal for the experiments. The cross-correlation between the transmitted and received signals represents the impulse response of the channel (multipath profile). The results show that the amplitude of the successive paths will not rapidly decline, and vice versa, when the distance between the sender and the receiver increases. Moreover, the time difference between the different paths will be small in the case of distance increase. In other words, the successive paths will converge in time.</p>

Experimentation of MIMO underwater acoustic communication in shallow water channel

2017 ◽  
Author(s):  
Pierre-Jean Bouvet ◽  
Yves Auffret ◽  
Didier Munck ◽  
Alain Pottier ◽  
Guy Janvresse ◽  
...  
Keyword(s):  
Shallow Water ◽  
Acoustic Communication ◽  
Water Channel ◽  
Underwater Acoustic Communication ◽  
Underwater Acoustic

scholarly journals MIMO Underwater Acoustic Communication in Shallow Water with Ice Cover

2019 ◽  
Vol 33 (2) ◽  
pp. 237-244 ◽  
Author(s):  
Xiao Han ◽  
Jing-wei Yin ◽  
Bing Liu ◽  
Long-xiang Guo
Keyword(s):  
Shallow Water ◽  
Acoustic Communication ◽  
Ice Cover ◽  
Underwater Acoustic Communication ◽  
Underwater Acoustic

Implementation of an Impulse Noise Suppression Method in OFDM Underwater Acoustic Communication System

2011 ◽  
Vol 268-270 ◽  
pp. 1537-1542
Author(s):  
Wen Han Ma ◽  
Xiao Yi Hu ◽  
Li Yang Bai
Keyword(s):  
Shallow Water ◽  
Acoustic Communication ◽  
Communication System ◽  
Orthogonal Frequency Division Multiplexing ◽  
Impulse Noise ◽  
Underwater Acoustic Communication ◽  
Ofdm System ◽  
Underwater Acoustic ◽  
Sea Trial ◽  
Ber Performance

This paper describes the characteristics of the impulse noise in the shallow water acoustic channel, and its influence on the bit error rate (BER) performance of the Orthogonal Frequency Division Multiplexing (OFDM) system. The simulation has been carried out to analyze the performance of the joint suppression of impulse noise in time and frequency domain in OFDM underwater acoustic communication system. Data processing of the actual sea trial in Xiamen Harbor shows that the method has some impressive effect on impulse noise in shallow water acoustic OFDM system, and improves the BER performance on different levels.

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