Research on Co-channel Base Station Interference Suppression Method of Passive Radar Based on LTE Signal

Xiaode LÜ; Hanliang ZHANG; Zhongsheng LIU; Zhenghao SUN; Pingyu LIU

doi:10.11999/JEIT180904

Volume 41 Issue 9

Sep. 2019

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Article Navigation > Journal of Electronics & Information Technology > 2019 > 41(9): 2123-2130

Xiaode LÜ, Hanliang ZHANG, Zhongsheng LIU, Zhenghao SUN, Pingyu LIU. Research on Co-channel Base Station Interference Suppression Method of Passive Radar Based on LTE Signal[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2123-2130. doi: 10.11999/JEIT180904

Citation:

Xiaode LÜ, Hanliang ZHANG, Zhongsheng LIU, Zhenghao SUN, Pingyu LIU. Research on Co-channel Base Station Interference Suppression Method of Passive Radar Based on LTE Signal[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2123-2130. doi: 10.11999/JEIT180904

Citation:

Xiaode LÜ, Hanliang ZHANG, Zhongsheng LIU, Zhenghao SUN, Pingyu LIU. Research on Co-channel Base Station Interference Suppression Method of Passive Radar Based on LTE Signal[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2123-2130. doi: 10.11999/JEIT180904

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Research on Co-channel Base Station Interference Suppression Method of Passive Radar Based on LTE Signal

doi: 10.11999/JEIT180904

Xiaode LÜ^{1, 2},
Hanliang ZHANG^{1, 2, 3
,
,},
Zhongsheng LIU^{1, 2},
Zhenghao SUN^{1, 2, 3},
Pingyu LIU^{1, 2, 3}

1.
Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
2.
National Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2018-09-20
Rev Recd Date: 2019-02-25

Available Online: 2019-03-14

Publish Date: 2019-09-10

Abstract

Abstract

For the passive radar based on LTE signal, the received signal contains direct-path and multipath clutters interference of multiple co-channel base station, and the traditional passive radar signal processing flow is improved, and the processing steps of co-channel base station interference are added. A blind source separation algorithm based on convolutive mixtures is proposed. The algorithm can suppress the clutters interference of co-channel base station. It is assumed that the mixing matrix is a vector linear time-invariant filter matrix. The mutual information is used as a cost function. By finding the gradient of mutual information, it is iterated by the steepest descent method. The separation criterion is to minimize the mutual information between the separated signals. The simulation results show that the proposed algorithm can effectively suppress the clutters interference of the LTE signal co-channel base station, and provide a basis for the subsequent clutters cancellation processing of the main base station.
- Passive radar,
- Long Term Evolution(LTE) signal,
- Co-channel interference suppression,
- Blind source separation

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References(18)

References

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