Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading
An approach for null broadening beamforming is proposed based on adaptive variable diagonal loading (VDL) and combined with the covariance matrix taper (CMT) approach, aiming at improving the robustness of adaptive antenna null broadening beamforming when array calibration error exists. Hence, it is...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2017/3265236 |
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| _version_ | 1832559527039336448 |
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| author | Wenxing Li Yu Zhao Qiubo Ye Bin Yang |
| author_facet | Wenxing Li Yu Zhao Qiubo Ye Bin Yang |
| author_sort | Wenxing Li |
| collection | DOAJ |
| description | An approach for null broadening beamforming is proposed based on adaptive variable diagonal loading (VDL) and combined with the covariance matrix taper (CMT) approach, aiming at improving the robustness of adaptive antenna null broadening beamforming when array calibration error exists. Hence, it is named VDL-CMT. In this novel approach, the signal-to-noise ratio in the tapered sample covariance matrix is estimated and the VDL factor can be obtained adaptively. Then, the covariance matrix of the CMT approach is loaded with the obtained VDL factor. According to simulation results, in the case of array calibration error, robustness of the VDL-CMT is significantly improved and its performance is better than that of the existing adaptive antenna null broadening beamforming approaches. |
| format | Article |
| id | doaj-art-eea60c0f85584463b6cd0f423797f69a |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-eea60c0f85584463b6cd0f423797f69a2025-02-03T01:29:59ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772017-01-01201710.1155/2017/32652363265236Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal LoadingWenxing Li0Yu Zhao1Qiubo Ye2Bin Yang3College of Information and Communications Engineering, Harbin Engineering University, Harbin, ChinaCollege of Information and Communications Engineering, Harbin Engineering University, Harbin, ChinaDepartment of Electronics, Carleton University, Ottawa, ON, CanadaCollege of Information and Communications Engineering, Harbin Engineering University, Harbin, ChinaAn approach for null broadening beamforming is proposed based on adaptive variable diagonal loading (VDL) and combined with the covariance matrix taper (CMT) approach, aiming at improving the robustness of adaptive antenna null broadening beamforming when array calibration error exists. Hence, it is named VDL-CMT. In this novel approach, the signal-to-noise ratio in the tapered sample covariance matrix is estimated and the VDL factor can be obtained adaptively. Then, the covariance matrix of the CMT approach is loaded with the obtained VDL factor. According to simulation results, in the case of array calibration error, robustness of the VDL-CMT is significantly improved and its performance is better than that of the existing adaptive antenna null broadening beamforming approaches.http://dx.doi.org/10.1155/2017/3265236 |
| spellingShingle | Wenxing Li Yu Zhao Qiubo Ye Bin Yang Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading International Journal of Antennas and Propagation |
| title | Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading |
| title_full | Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading |
| title_fullStr | Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading |
| title_full_unstemmed | Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading |
| title_short | Adaptive Antenna Null Broadening Beamforming against Array Calibration Error Based on Adaptive Variable Diagonal Loading |
| title_sort | adaptive antenna null broadening beamforming against array calibration error based on adaptive variable diagonal loading |
| url | http://dx.doi.org/10.1155/2017/3265236 |
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