Adaptive orthogonal frequency division multiplexing underwater acoustic communications with limited feedback

2013 ◽  
Vol 134 (5) ◽  
pp. 4108-4108
Author(s):  
Xiaopeng Huang ◽  
Aijun Song ◽  
Walid Ahmed ◽  
Moshen Badiey ◽  
Victor Lawrence
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Limited Feedback ◽  
Frequency Division Multiplexing ◽  
Underwater Acoustic Communications ◽  
Frequency Division ◽  
Acoustic Communications ◽  
Underwater Acoustic

An OFDM System for Long-Range Underwater Acoustic Communications

2013 ◽  
Vol 321-324 ◽  
pp. 1274-1277 ◽  
Author(s):  
Xiao Lin Shi ◽  
Yi Xin Yang ◽  
Long Yang
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Data Stream ◽  
Underwater Acoustic Communications ◽  
Frequency Division ◽  
Ofdm System ◽  
Acoustic Communications ◽  
Underwater Acoustic ◽  
Frequency Domain Equalization ◽  
Convolutional Coding ◽  
Simulation Results

The Orthogonal Frequency Division Multiplexing (OFDM) technique is an effective method for suppressing multi-paths interference of underwater acoustic (UWA) channels. In this paper, a new communication system based on OFDM is presented, aiming at reliable 70km shallow water communications. The convolutional coding and frequency-domain equalization are also applied for the improvement of the OFDM system performance. The simulation results show that this proposed system can transmit data stream with low bit error rate (BER) in 70km UWA distance.

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