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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xiang Zou Ritcey, J.A. Rouseff, D. |
| Copyright Year | 2013 |
| Description | Author affiliation: Electr. Eng. Dept., Univ. of Washington, Seattle, WA, USA (Xiang Zou; Ritcey, J.A.) || Appl. Phys. Lab., Univ. of Washington, Seattle, WA, USA (Rouseff, D.) |
| Abstract | The use of multiple hydrophones at the receiver brings several advantages to an underwater communication system, such as improved signal-to-noise (SNR) ratio and spatial diversity gain. Many existing array combining techniques have implicitly assumed that the channel undergoes flat fading, with either perfect time-domain equalization (TDE) or OFDM-based (Orthogonal Frequency Division Multiplexing) modulation. Unfortunately, direct applications of these methods to underwater acoustic (UWA) channels are severely limited by the long delay spread and the low dynamic range of hydrophones. In this paper, a receiver structure based on the recently developed iterative block (IB) decision-feedback equalization (DFE) with single-carrier frequency domain equalization (SC-FDE) was applied to the real underwater acoustic data from CAPEx09. We investigated the performance improvement of this nonlinear equalizer with respect to the regular linear MMSE equalizer. Our results show that the IB-DFE are more immune to the noise contaminations compared with MMSE equalizer. |
| Sponsorship | IEEE Signal Process. Soc. |
| Starting Page | 728 |
| Ending Page | 730 |
| File Size | 213251 |
| Page Count | 3 |
| File Format | |
| e-ISBN | 9781479923908 |
| DOI | 10.1109/ACSSC.2013.6810379 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-11-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Decision feedback equalizers Receivers Bit error rate Arrays Underwater acoustics Signal to noise ratio Sonar equipment decision-feedback iterative frequency domain equalization underwater |
| Content Type | Text |
| Resource Type | Article |
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