| OFDM高速水声移动通信系统方案设计(英文) |
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| 引用本文： | 乔钢,王巍,郭冉,Rehan Khan,王玥.OFDM高速水声移动通信系统方案设计(英文)[J].船舶与海洋工程学报,2012,11(1):126-133. |
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| 作者姓名： | 乔钢 王巍 郭冉 Rehan Khan 王玥 |
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| 作者单位： | Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University |
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| 基金项目： | Supported by the National High Technology Research and Development Program of China (2009AA093601-2);the National Defense Foundation Research (B2420110007) |
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| 摘 要： | The major constraint on the performance of orthogonal frequency division multiplexing(OFDM) based underwater acoustic(UWA) communication is to keep subcarriers orthogonal.In this paper,Doppler estimation and the respective compensation technique along with various diversity techniques were deliberated for OFDM-based systems best suited for underwater wireless information exchange.In practice,for mobile communication,adjustment and tuning of transducers in order to get spatial diversity is extremely difficult.Considering the relatively low coherence bandwidth in UWA,the frequency diversity design with the Doppler compensation function was elaborated here.The outfield experiments of mobile underwater acoustic communication(UWAC) based on OFDM were carried out with 0.17 bit/(sHz) spectral efficiency.The validity and the dependability of the scheme were also analyzed.
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| 关 键 词： | underwater acoustic channel orthogonal frequency division multiplexing(OFDM) underwater acoustic communication frequency diversity Doppler estimation Doppler compensation |
Frequency diversity for OFDM mobile communication via underwater acoustic channels |
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| Gang Qiao,Wei Wang,Ran Guo,Rehan Khan,Yue Wang.Frequency diversity for OFDM mobile communication via underwater acoustic channels[J].Journal of Marine Science and Application,2012,11(1):126-133. |
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| Authors: | Gang Qiao Wei Wang Ran Guo Rehan Khan Yue Wang |
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| Institution: | ,Ran Guo,Rehan Khan and Yue Wang Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001,China |
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| Abstract: | The major constraint on the performance of orthogonal frequency division multiplexing (OFDM) based underwater acoustic (UWA)
communication is to keep subcarriers orthogonal. In this paper, Doppler estimation and the respective compensation technique
along with various diversity techniques were deliberated for OFDM-based systems best suited for underwater wireless information
exchange. In practice, for mobile communication, adjustment and tuning of transducers in order to get spatial diversity is
extremely difficult. Considering the relatively low coherence bandwidth in UWA, the frequency diversity design with the Doppler
compensation function was elaborated here. The outfield experiments of mobile underwater acoustic communication (UWAC) based
on OFDM were carried out with 0.17 bit/(s·Hz) spectral efficiency. The validity and the dependability of the scheme were also
analyzed. |
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| Keywords: | underwater acoustic channel orthogonal frequency division multiplexing(OFDM) underwater acoustic communication frequency diversity Doppler estimation Doppler compensation |
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