Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications
<p/> <p>Multiple-input multiple-output (MIMO) underwater acoustic (UWA) channels introduce both space-time interference (STI) and time-varying phase distortion for transmitted signals. In such cases, the equalized symbols produced by conventional equalizer aiming for STI cancelation suff...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2010-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://asp.eurasipjournals.com/content/2010/281769 |
| _version_ | 1819298741886124032 |
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| author | Zheng YahongRosa Xiao Chengshan Yang Wen-Bin Yang TC Tao Jun |
| author_facet | Zheng YahongRosa Xiao Chengshan Yang Wen-Bin Yang TC Tao Jun |
| author_sort | Zheng YahongRosa |
| collection | DOAJ |
| description | <p/> <p>Multiple-input multiple-output (MIMO) underwater acoustic (UWA) channels introduce both space-time interference (STI) and time-varying phase distortion for transmitted signals. In such cases, the equalized symbols produced by conventional equalizer aiming for STI cancelation suffer phase rotation and thus cannot be reliably detected. In this paper, we propose a new equalization scheme for high data rate single carrier MIMO UWA channels. Different from existing methods employing joint equalization and symbolwise phase tracking technology, the proposed scheme decouples the interference cancelation (IC) operation and the phase compensation operation, leading to a generalized equalizer structure combining an IC equalizer with a phase compensator. The decoupling of the two functionalities leads to robust signal detection, which is most desirable in practical UWA applications. MIMO linear equalizer (LE) is adopted to remove space-time interference, and a groupwise phase estimation and correction method is used to compensate the phase rotation. In addition, the layered space-time processing technology is adopted to enhance the equalization performance. The proposed equalization scheme is tested to be very robust with extensive experimental data collected at Kauai, Hawaii, in September 2005, and Saint Margaret's Bay, Nova Scotia, Canada, in May 2006.</p> |
| first_indexed | 2024-12-24T05:34:43Z |
| format | Article |
| id | doaj.art-1fd41c7604e94634876b645324b6a41e |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-12-24T05:34:43Z |
| publishDate | 2010-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-1fd41c7604e94634876b645324b6a41e2022-12-21T17:13:03ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802010-01-0120101281769Channel Equalization for Single Carrier MIMO Underwater Acoustic CommunicationsZheng YahongRosaXiao ChengshanYang Wen-BinYang TCTao Jun<p/> <p>Multiple-input multiple-output (MIMO) underwater acoustic (UWA) channels introduce both space-time interference (STI) and time-varying phase distortion for transmitted signals. In such cases, the equalized symbols produced by conventional equalizer aiming for STI cancelation suffer phase rotation and thus cannot be reliably detected. In this paper, we propose a new equalization scheme for high data rate single carrier MIMO UWA channels. Different from existing methods employing joint equalization and symbolwise phase tracking technology, the proposed scheme decouples the interference cancelation (IC) operation and the phase compensation operation, leading to a generalized equalizer structure combining an IC equalizer with a phase compensator. The decoupling of the two functionalities leads to robust signal detection, which is most desirable in practical UWA applications. MIMO linear equalizer (LE) is adopted to remove space-time interference, and a groupwise phase estimation and correction method is used to compensate the phase rotation. In addition, the layered space-time processing technology is adopted to enhance the equalization performance. The proposed equalization scheme is tested to be very robust with extensive experimental data collected at Kauai, Hawaii, in September 2005, and Saint Margaret's Bay, Nova Scotia, Canada, in May 2006.</p>http://asp.eurasipjournals.com/content/2010/281769 |
| spellingShingle | Zheng YahongRosa Xiao Chengshan Yang Wen-Bin Yang TC Tao Jun Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications EURASIP Journal on Advances in Signal Processing |
| title | Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications |
| title_full | Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications |
| title_fullStr | Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications |
| title_full_unstemmed | Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications |
| title_short | Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications |
| title_sort | channel equalization for single carrier mimo underwater acoustic communications |
| url | http://asp.eurasipjournals.com/content/2010/281769 |
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