A frequency offset compensation method based on all phase FFT amplitude
Distance measurement is an important part of the wireless location technology.The ranging accuracy of millimeter wave based distance measurement depends on the frequency estimation accuracy of beat signals from the targets, but the existing frequency estimation algorithms have the shortcomings of ei...
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| Format: | Article |
| Language: | zho |
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China InfoCom Media Group
2022-06-01
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| Series: | 物联网学报 |
| Subjects: | |
| Online Access: | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2022.00274/ |
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| _version_ | 1841531174888931328 |
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| author | Yingjie ZHU Wuxiong ZHANG Huiyue YI Hui XU |
| author_facet | Yingjie ZHU Wuxiong ZHANG Huiyue YI Hui XU |
| author_sort | Yingjie ZHU |
| collection | DOAJ |
| description | Distance measurement is an important part of the wireless location technology.The ranging accuracy of millimeter wave based distance measurement depends on the frequency estimation accuracy of beat signals from the targets, but the existing frequency estimation algorithms have the shortcomings of either high complexity or low accuracy.In order to improve the ranging accuracy, the frequency compensation value and frequency estimation method based on all phase FFT amplitude was proposed to improve the performance of frequency estimation.Firstly, the signal amplitude was estimated based on the relationship between its all phase FFT and its conventional FFT spectrum.Moreover, using the relationship between the estimated signal amplitude, the signal spectrum amplitude and frequency compensation value, the frequency compensation value was solved by Newton iterative algorithm.Then, the frequency compensation value was used to shift the frequency of the signal, and the frequency compensation value was estimated again to obtain the final estimation value of the signal frequency, from which the distance of the target was calculated.Finally, simulation results were presented to show that the proposed method has higher distance measurement accuracy than the existing methods. |
| format | Article |
| id | doaj-art-7baa9666f2a9437cafbbbdc2b35a04c7 |
| institution | Kabale University |
| issn | 2096-3750 |
| language | zho |
| publishDate | 2022-06-01 |
| publisher | China InfoCom Media Group |
| record_format | Article |
| series | 物联网学报 |
| spelling | doaj-art-7baa9666f2a9437cafbbbdc2b35a04c72025-01-15T02:53:22ZzhoChina InfoCom Media Group物联网学报2096-37502022-06-016101859648418A frequency offset compensation method based on all phase FFT amplitudeYingjie ZHUWuxiong ZHANGHuiyue YIHui XUDistance measurement is an important part of the wireless location technology.The ranging accuracy of millimeter wave based distance measurement depends on the frequency estimation accuracy of beat signals from the targets, but the existing frequency estimation algorithms have the shortcomings of either high complexity or low accuracy.In order to improve the ranging accuracy, the frequency compensation value and frequency estimation method based on all phase FFT amplitude was proposed to improve the performance of frequency estimation.Firstly, the signal amplitude was estimated based on the relationship between its all phase FFT and its conventional FFT spectrum.Moreover, using the relationship between the estimated signal amplitude, the signal spectrum amplitude and frequency compensation value, the frequency compensation value was solved by Newton iterative algorithm.Then, the frequency compensation value was used to shift the frequency of the signal, and the frequency compensation value was estimated again to obtain the final estimation value of the signal frequency, from which the distance of the target was calculated.Finally, simulation results were presented to show that the proposed method has higher distance measurement accuracy than the existing methods.http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2022.00274/millimeter wavelocalizationdistance measurementfrequency estimation |
| spellingShingle | Yingjie ZHU Wuxiong ZHANG Huiyue YI Hui XU A frequency offset compensation method based on all phase FFT amplitude 物联网学报 millimeter wave localization distance measurement frequency estimation |
| title | A frequency offset compensation method based on all phase FFT amplitude |
| title_full | A frequency offset compensation method based on all phase FFT amplitude |
| title_fullStr | A frequency offset compensation method based on all phase FFT amplitude |
| title_full_unstemmed | A frequency offset compensation method based on all phase FFT amplitude |
| title_short | A frequency offset compensation method based on all phase FFT amplitude |
| title_sort | frequency offset compensation method based on all phase fft amplitude |
| topic | millimeter wave localization distance measurement frequency estimation |
| url | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2022.00274/ |
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