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Paper Abstract and Keywords
Presentation 2024-01-29 13:50
OFDM transmisson method using Table Selection for Underwater Acoustic Communications
Takumi Yoshimura, Taichi Fujita, Hiroshi Kubo (Ritumeikan Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Underwater acoustic communications (UWAC) suffer from double selectivity, where doubly-selective channels suffer from severe frequency selectivity and time selectivity simultaneously. UWAC channels can be approximated by sparse channels of multiple static paths with Doppler shifts. These channels can be simplified as two-path static channels with Doppler shifts. This paper discusses the orthogonal frequency division multiplexing (OFDM) as a wireless transmission technology for UWAC, which selects the suitable parameter at regular time intervals and performs two-dimensional transmission channel estimation with the selected parameter in the frequency and time directions. The feature of this method is that it prepares multiple tables of filter coefficients for channel estimation, and selects the table with the least error in estimation results on pilot symbols. Finally, computer simulations show the performance of this method on sparse two-path static channels with Doppler shifts.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater Acoustic Communications / Doubly-Selective Channels / OFDM / Two-dimensional channel estimation / table selection / / /  
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Conference Information
Committee UWT  
Conference Date 2024-01-29 - 2024-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokai University Shinagawa Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Underwater Wireless Technology 
Paper Information
Registration To UWT 
Conference Code 2024-01-UWT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) OFDM transmisson method using Table Selection for Underwater Acoustic Communications 
Sub Title (in English)  
Keyword(1) Underwater Acoustic Communications  
Keyword(2) Doubly-Selective Channels  
Keyword(3) OFDM  
Keyword(4) Two-dimensional channel estimation  
Keyword(5) table selection  
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1st Author's Name Takumi Yoshimura  
1st Author's Affiliation Ritsumeikan University (Ritumeikan Univ.)
2nd Author's Name Taichi Fujita  
2nd Author's Affiliation Ritsumeikan University (Ritumeikan Univ.)
3rd Author's Name Hiroshi Kubo  
3rd Author's Affiliation Ritsumeikan University (Ritumeikan Univ.)
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Speaker Author-1 
Date Time 2024-01-29 13:50:00 
Presentation Time 25 minutes 
Registration for UWT 
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