Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach
The conventional channel estimation schemes for filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems are mainly based on preamble methods. However, the utilization of preamble for channel estimation decreases the system’s spectrum efficiency. In this paper, we pro...
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| Format: | Article |
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MDPI AG
2018-03-01
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| Series: | Information |
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| Online Access: | http://www.mdpi.com/2078-2489/9/3/58 |
| _version_ | 1828435498492755968 |
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| author | Han Wang Jianqing Liao Lingwei Xu Xianpeng Wang |
| author_facet | Han Wang Jianqing Liao Lingwei Xu Xianpeng Wang |
| author_sort | Han Wang |
| collection | DOAJ |
| description | The conventional channel estimation schemes for filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems are mainly based on preamble methods. However, the utilization of preamble for channel estimation decreases the system’s spectrum efficiency. In this paper, we propose a modified subspace blind channel estimation method for FBMC/OQAM systems. The proposed method distinguishes itself from previously preamble based methods by utilizing spatial diversity technique to introduce data redundancy for blind channel estimation, which leads to high spectral utilization. Thus, the proposed method can provide significant root mean square error (RMSE) performance improvement compared to conventional preamble based methods at high SNRs. Simulation results verify the validity of the proposed method in FBMC/OQAM systems. |
| first_indexed | 2024-12-10T19:09:12Z |
| format | Article |
| id | doaj.art-a51e9771d8824b90b5554ae12d33cdea |
| institution | Directory Open Access Journal |
| issn | 2078-2489 |
| language | English |
| last_indexed | 2024-12-10T19:09:12Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
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| spelling | doaj.art-a51e9771d8824b90b5554ae12d33cdea2022-12-22T01:36:49ZengMDPI AGInformation2078-24892018-03-01935810.3390/info9030058info9030058Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace ApproachHan Wang0Jianqing Liao1Lingwei Xu2Xianpeng Wang3College of Physical Science and Engineering, Yichun University, Yichun 336000, ChinaCollege of Physical Science and Engineering, Yichun University, Yichun 336000, ChinaDepartment of Information Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, ChinaState Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, ChinaThe conventional channel estimation schemes for filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems are mainly based on preamble methods. However, the utilization of preamble for channel estimation decreases the system’s spectrum efficiency. In this paper, we propose a modified subspace blind channel estimation method for FBMC/OQAM systems. The proposed method distinguishes itself from previously preamble based methods by utilizing spatial diversity technique to introduce data redundancy for blind channel estimation, which leads to high spectral utilization. Thus, the proposed method can provide significant root mean square error (RMSE) performance improvement compared to conventional preamble based methods at high SNRs. Simulation results verify the validity of the proposed method in FBMC/OQAM systems.http://www.mdpi.com/2078-2489/9/3/58FBMC/OQAMblind channel estimationsubspace methodpreambleRMSE |
| spellingShingle | Han Wang Jianqing Liao Lingwei Xu Xianpeng Wang Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach Information FBMC/OQAM blind channel estimation subspace method preamble RMSE |
| title | Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach |
| title_full | Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach |
| title_fullStr | Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach |
| title_full_unstemmed | Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach |
| title_short | Blind Channel Estimation for FBMC/OQAM Systems Based on Subspace Approach |
| title_sort | blind channel estimation for fbmc oqam systems based on subspace approach |
| topic | FBMC/OQAM blind channel estimation subspace method preamble RMSE |
| url | http://www.mdpi.com/2078-2489/9/3/58 |
| work_keys_str_mv | AT hanwang blindchannelestimationforfbmcoqamsystemsbasedonsubspaceapproach AT jianqingliao blindchannelestimationforfbmcoqamsystemsbasedonsubspaceapproach AT lingweixu blindchannelestimationforfbmcoqamsystemsbasedonsubspaceapproach AT xianpengwang blindchannelestimationforfbmcoqamsystemsbasedonsubspaceapproach |