Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems
In this paper, we present a novel sequence design for efficient channel estimation in multiple input multiple output filterbank multicarrier (MIMO-FBMC) system with offset QAM modulation. Our proposed sequences, transmitted over one FBMC/OQAM symbol, are real-valued in the frequency domain and displ...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8723047/ |
| _version_ | 1818935674743554048 |
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| author | Jing Zhang Su Hu Zilong Liu Pei Wang Pei Xiao Yuan Gao |
| author_facet | Jing Zhang Su Hu Zilong Liu Pei Wang Pei Xiao Yuan Gao |
| author_sort | Jing Zhang |
| collection | DOAJ |
| description | In this paper, we present a novel sequence design for efficient channel estimation in multiple input multiple output filterbank multicarrier (MIMO-FBMC) system with offset QAM modulation. Our proposed sequences, transmitted over one FBMC/OQAM symbol, are real-valued in the frequency domain and display zero-correlation zone properties in the time-domain. The latter property enables optimal channel estimation for a least-square estimator in frequency-selective fading channels. To further improve the system performance, we mitigate the data interference by an iterative feedback loop between channel estimation and FBMC demodulation. The simulation results validate that our proposed real-valued orthogonal sequences and the iterative channel estimation and demodulation scheme provide a practical solution for enhanced performance in preamble-based MIMO-FBMC systems. |
| first_indexed | 2024-12-20T05:23:56Z |
| format | Article |
| id | doaj.art-66546e454ec34496b7bd859078667382 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T05:23:56Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-66546e454ec34496b7bd8590786673822022-12-21T19:51:56ZengIEEEIEEE Access2169-35362019-01-017687426875110.1109/ACCESS.2019.29191188723047Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC SystemsJing Zhang0Su Hu1https://orcid.org/0000-0002-7736-3753Zilong Liu2https://orcid.org/0000-0001-5151-6929Pei Wang3Pei Xiao4https://orcid.org/0000-0002-7886-5878Yuan Gao5https://orcid.org/0000-0001-8567-4888National Key Laboratory on Communications, University of Electronic Science and Technology of China, Chengdu, ChinaNational Key Laboratory on Communications, University of Electronic Science and Technology of China, Chengdu, ChinaInstitute of Communication Systems, 5G Innovation Centre, University of Surrey, Guildford, U.K.National Key Laboratory on Communications, University of Electronic Science and Technology of China, Chengdu, ChinaInstitute of Communication Systems, 5G Innovation Centre, University of Surrey, Guildford, U.K.Academy of Military Science of PLA, Beijing, ChinaIn this paper, we present a novel sequence design for efficient channel estimation in multiple input multiple output filterbank multicarrier (MIMO-FBMC) system with offset QAM modulation. Our proposed sequences, transmitted over one FBMC/OQAM symbol, are real-valued in the frequency domain and display zero-correlation zone properties in the time-domain. The latter property enables optimal channel estimation for a least-square estimator in frequency-selective fading channels. To further improve the system performance, we mitigate the data interference by an iterative feedback loop between channel estimation and FBMC demodulation. The simulation results validate that our proposed real-valued orthogonal sequences and the iterative channel estimation and demodulation scheme provide a practical solution for enhanced performance in preamble-based MIMO-FBMC systems.https://ieeexplore.ieee.org/document/8723047/MIMO-FBMCchannel estimationpreamblereal-valued orthogonalityzero-correlation zone sequencesfeedback iteration loop |
| spellingShingle | Jing Zhang Su Hu Zilong Liu Pei Wang Pei Xiao Yuan Gao Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems IEEE Access MIMO-FBMC channel estimation preamble real-valued orthogonality zero-correlation zone sequences feedback iteration loop |
| title | Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems |
| title_full | Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems |
| title_fullStr | Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems |
| title_full_unstemmed | Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems |
| title_short | Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems |
| title_sort | real valued orthogonal sequences for iterative channel estimation in mimo fbmc systems |
| topic | MIMO-FBMC channel estimation preamble real-valued orthogonality zero-correlation zone sequences feedback iteration loop |
| url | https://ieeexplore.ieee.org/document/8723047/ |
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