Paper Abstract and Keywords |
Presentation |
2022-06-20 15:05
Underwater Acoustic Communications from Mobile Radio Communication's Point of View Hiroshi Kubo (Ritsumeikan Univ.) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper discusses channel environments and wireless transmission technologies of underwater acoustic communications (UWACs) from mobile radio communication's point of view. First, this paper discusses relationship of channel environments between radio frequency (RF)-band wireless communications and UWACs and discusses their similarities and differences of channel environments. Then, UWACs have the following features: 1) it suffers from severe time and frequency selectivity, i.e., double selectivity; 2) their channel paths consist of sparse static paths with Doppler shifts. Next, promising wireless transmission technologies of UWACs are spatial combing equalization employing multiple receive antennas and coherent block transmission technologies, e.g., coherent orthogonal frequency division multiplexing (OFDM), employing automatic frequency control (AFC) in doubly-selective UWAC channel environments. Finally, in order to improve performance in doubly-selective environments, this paper discusses differential OFDM without the spatial combining employing joint detection with channel prediction, where joint detection can detect data without pilot symbols. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Underwater Acoustic Communications / Terrestrial Land Mobile Communications / RF-Band Wireless Communications / Doubly-Selective Channels / OFDM / / / |
Reference Info. |
IEICE Tech. Rep. |
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Conference Information |
Committee |
UWT |
Conference Date |
2022-06-20 - 2022-06-20 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Underwater Wireless Technology |
Paper Information |
Registration To |
UWT |
Conference Code |
2022-06-UWT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Underwater Acoustic Communications from Mobile Radio Communication's Point of View |
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Underwater Acoustic Communications |
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Terrestrial Land Mobile Communications |
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RF-Band Wireless Communications |
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Doubly-Selective Channels |
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OFDM |
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1st Author's Name |
Hiroshi Kubo |
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Ritsumeikan University (Ritsumeikan Univ.) |
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Speaker |
Author-1 |
Date Time |
2022-06-20 15:05:00 |
Presentation Time |
25 minutes |
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UWT |
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