Variable Range Resampling for Computationally Efficient Doppler Compensation in Underwater Acoustic Communication
In shallow-water acoustic communication, OFDM is used owing to robustness with highly selective frequency fading channels. As for the countermeasure of OFDM sensitivity to Doppler, resampling is known as one of effective approaches as Doppler compensation. Performance degradation occurs under non-un...
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| Published in | 2018 OCEANS MTS IEEE Kobe Techno Oceans (OTO) pp. 1 - 4 |
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| Main Authors | , , , , |
| Format | Conference Proceeding |
| Language | English Japanese |
| Published |
IEEE
01.05.2018
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| Subjects | |
| Online Access | Get full text |
| DOI | 10.1109/OCEANSKOBE.2018.8559418 |
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| Abstract | In shallow-water acoustic communication, OFDM is used owing to robustness with highly selective frequency fading channels. As for the countermeasure of OFDM sensitivity to Doppler, resampling is known as one of effective approaches as Doppler compensation. Performance degradation occurs under non-uniform Doppler shifts where the Doppler scaling factor is not constant. Our previous work presented parallel resampling with considering Doppler shift dispersion. It improved Doppler resilience, however required exhaustive computation. We study complexity reduction of parallel resampling receiver where the degree of parallelism is dynamically controlled on a frame-by-frame basis, This method can reduce complexity of resampling with keeping the same communication performance. |
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| AbstractList | In shallow-water acoustic communication, OFDM is used owing to robustness with highly selective frequency fading channels. As for the countermeasure of OFDM sensitivity to Doppler, resampling is known as one of effective approaches as Doppler compensation. Performance degradation occurs under non-uniform Doppler shifts where the Doppler scaling factor is not constant. Our previous work presented parallel resampling with considering Doppler shift dispersion. It improved Doppler resilience, however required exhaustive computation. We study complexity reduction of parallel resampling receiver where the degree of parallelism is dynamically controlled on a frame-by-frame basis, This method can reduce complexity of resampling with keeping the same communication performance. |
| Author | Saito, Takashi Yoshizawa, Shingo Sawada, Shinichi Mabuchi, Yusaku Tsukui, Tomoya |
| Author_xml | – sequence: 1 givenname: Shingo surname: Yoshizawa fullname: Yoshizawa, Shingo organization: Kitami Institute of Technology, Kitami, Japan – sequence: 2 givenname: Takashi surname: Saito fullname: Saito, Takashi organization: Mitsubishi Electric TOKKI Systems Corporation, Kamakura, Japan – sequence: 3 givenname: Yusaku surname: Mabuchi fullname: Mabuchi, Yusaku organization: Mitsubishi Electric TOKKI Systems Corporation, Kamakura, Japan – sequence: 4 givenname: Tomoya surname: Tsukui fullname: Tsukui, Tomoya organization: IHI Corporation, Yokohama, Japan – sequence: 5 givenname: Shinichi surname: Sawada fullname: Sawada, Shinichi organization: IHI Corporation, Yokohama, Japan |
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| Snippet | In shallow-water acoustic communication, OFDM is used owing to robustness with highly selective frequency fading channels. As for the countermeasure of OFDM... |
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| SubjectTerms | Complexity theory Doppler shift Doppler shifts OFDM Parallel processing Receivers resampling Underwater acoustic communication Underwater acoustics |
| Title | Variable Range Resampling for Computationally Efficient Doppler Compensation in Underwater Acoustic Communication |
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