Compensation for time variance in long-range time-reversal communication

远距离时间反转通信中时间方差的补偿

• 批准号: 22760645
• 负责人: SHIMURA Takuya
• 金额: $ 2.58万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760645/
• 关键词: 水中音響通信; デジタル通信; 位相共役 (phase conjugate); 時間反転 (time reversal); ドップラー; 時間変動; シンボル間干渉; マルチパス波; 位相共役; 時間反転; phase conjugate; time reversal; 海洋音響; 位相共役波; 時間反転波

In underwater acoustic communication, differently from radio communication in air, inter symbol interferences (ISI) due to multipath rich environment and the movement of source or receiver, which results in Doppler shift and time-variant channel impulse response, are very dominant. For the former, time reversal (phase conjugate) communication has been proposed and verified to be very efficient in the previous study. In this research, the method to compensate the effect of time variance in time-reversal communication is discussed and demonstrated based on the normal mode simulations and at-sea experiments.

在水下声学通信中，与空气中的无线电通信不同，由于多径富集的环境和源或接收器的运动，导致多普勒的偏移和时间变化的通道脉冲响应，这是非常主导的。对于前者，已经提出了时间逆转（相结合）通信，并在先前的研究中验证非常有效。在这项研究中，根据正常模式模拟和ATSEAS实验，讨论和证明了补偿时间差异效果的方法。

项目成果

Feasibility study on time-reversal communication in the deep ocean with a long cruising AUV

长巡航AUV深海时间反演通信可行性研究

• 发表时间: 2010
• 作者: Takuya Shimura;Yoshitaka Watanabe;Hiroshi Ochi;and Takehito Hattori
• 通讯作者: and Takehito Hattori

◦Results of basic experiments for long-range communication in the deep ocean

◦深海远程通信基础实验结果

• 发表时间: 2011
• 作者: Takuya SHIMURA;Hiroshi OCHI;Yoshitaka WATANABE;Takehito HATTORI,
• 通讯作者: Takehito HATTORI,

Results of basic experiments for long-range communication in the deep ocean

深海远程通信基础实验结果

• 发表时间: 2011
• 作者: Takuya SHIMURA;Hiroshi OCHI;Yoshitaka WATANABE;Takehito HATTORI
• 通讯作者: Takehito HATTORI

Experiment Results of Time-Reversal Communication in the Outer Ocean

外海时间反演通信的实验结果

• 发表时间: 2010
• 作者: Takuya Shimura;Yoshitaka Watanabe;Hiroshi Ochi;and Takehito Hattori
• 通讯作者: and Takehito Hattori

Demonstration of time-reversal communication combined with spread spectrum at the range of 900 km in deep ocean

• DOI: 10.1250/ast.33.113
• 发表时间: 2012-01-01
• 期刊: ACOUSTICAL SCIENCE AND TECHNOLOGY
• 影响因子: 0.7
• 作者: Shimura, Takuya;Ochi, Hiroshi;Hattori, Takehito
• 通讯作者: Hattori, Takehito