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| Title: | Further results on frequency-domain channel equalization for single carrier underwater acoustic communications | |
| Author (s): | Zheng, Y. Rosa Xiao, Chengshan Liu, Xin Yang, T.C. Yang, Wen-Bin | |
| Department/Lab Affiliations: | Electrical and Computer Engineering Intelligent Systems Center Wireless Communications Lab | |
| Keywords: | Doppler shift least mean squares methods oceanographic techniques underwater acoustic communication | |
| Issue Date: | 2008-04 | |
| Publisher: | Institute of Electrical and Electronics Engineers IEEE | |
| Citation: | Zheng Y.R., Xiao, C., Liu, X., Yang, T.C., and Yang, W.B. “Further results on frequency-domain channel equalization for single carrier underwater acoustic communications” MTS/IEEE Kobe Techno-Ocean, OCEANS 2008, pp. 1-6. | |
| Abstract: | A frequency-domain channel equalization and phase correction method was proposed in a previous work published in Oceans'07 conference, in which 10^-4 BER performance was presented for fixed-to-fixed source/receiver channels. The method is improved by using minimum mean square error (MMSE) estimation in channel updates rather than least squares estimation. It is applied to moving-to-fixed channels in the AUVFest'07 ocean experiment where single-carrier wideband transmission was employed with quadrature phase shift keying modulation. The moving source channels exhibit higher Doppler shift and larger Doppler drift than the fixed-to-fixed channels. Therefore, the number of symbols required for initial phase estimation is increased from 2 to 8 symbols when the group- wise phase correction algorithm is applied to the moving sources. Thirty-six packets with data block length of 512 symbols have been processed and 34 of them achieved an uncoded Bit Error Rate (BER) lower than 10-2. The overall uncoded BER performance of all 36 packets is 1.81 times 10^-3 which is slightly higher than that of the fixed-to-fixed channels. | |
| Type: | Article - Conference proceedings text | |
| In Title: | MTS/IEEE Kobe Techno-Ocean, OCEANS 2008 | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. allows publisher's final version to be uploaded FULL COPYRIGHT INFORMATION: | |
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| Full Text: |
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| title | Further results on frequency-domain channel equalization for single carrier underwater acoustic communications | |
| contributor.author | Zheng, Y. Rosa | |
| contributor.author | Xiao, Chengshan | |
| contributor.author | Liu, Xin | |
| contributor.author | Yang, T.C. | |
| contributor.author | Yang, Wen-Bin | |
| contributor.deptlab | Electrical and Computer Engineering | |
| contributor.deptlab | Intelligent Systems Center | |
| contributor.deptlab | Wireless Communications Lab | |
| contributor.sponsor | National Science Foundation | |
| contributor.sponsor | Office of Naval Research | |
| subject | Doppler shift | |
| subject | least mean squares methods | |
| subject | oceanographic techniques | |
| subject | underwater acoustic communication | |
| date.issued | 2008-04 | |
| publisher | Institute of Electrical and Electronics Engineers IEEE | |
| identifier.citation | Zheng Y.R., Xiao, C., Liu, X., Yang, T.C., and Yang, W.B. “Further results on frequency-domain channel equalization for single carrier underwater acoustic communications” MTS/IEEE Kobe Techno-Ocean, OCEANS 2008, pp. 1-6. | |
| identifier.pub.URI | ||
| description.abstract | A frequency-domain channel equalization and phase correction method was proposed in a previous work published in Oceans'07 conference, in which 10^-4 BER performance was presented for fixed-to-fixed source/receiver channels. The method is improved by using minimum mean square error (MMSE) estimation in channel updates rather than least squares estimation. It is applied to moving-to-fixed channels in the AUVFest'07 ocean experiment where single-carrier wideband transmission was employed with quadrature phase shift keying modulation. The moving source channels exhibit higher Doppler shift and larger Doppler drift than the fixed-to-fixed channels. Therefore, the number of symbols required for initial phase estimation is increased from 2 to 8 symbols when the group- wise phase correction algorithm is applied to the moving sources. Thirty-six packets with data block length of 512 symbols have been processed and 34 of them achieved an uncoded Bit Error Rate (BER) lower than 10-2. The overall uncoded BER performance of all 36 packets is 1.81 times 10^-3 which is slightly higher than that of the fixed-to-fixed channels. | |
| type | Article - Conference proceedings | |
| type.DCMIType | text | |
| type.status | Final version | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights | allows publisher's final version to be uploaded | |
| rights.URI | ||
| rights.URI | ||
| rights.URI | ||
| relation.isPartOf | MTS/IEEE Kobe Techno-Ocean, OCEANS 2008 | |
| date.accessioned | 2008-08-01T17:54:13Z | |
| date.available | 2008-08-05T18:52:39Z | |
| identifier.persist.URI | ||
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