首页|Trajectory Tracking for MmWave Communication Systems via Cooperative Passive Sensing
Trajectory Tracking for MmWave Communication Systems via Cooperative Passive Sensing
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维普
A cooperative passive sensing framework for millimeter wave (mmWave) communication systems is proposed and demonstrated in a scenario with one mobile signal blocker. Specifically,in the uplink communication with at least two transmitters,a cooperative detection method is proposed for the receiver to track the blocker's trajectory,localize the transmitters and detect the potential link blockage jointly. To facilitate detection,the receiver collects the signal of each transmitter along a line-of-sight (LoS) path and a non-line-of-sight (NLoS) path separately via two narrow-beam phased arrays. The NLoS path involves scattering at the mobile blocker,allowing its identification through the Doppler fre-quency. By comparing the received signals of both paths,the Doppler frequency and angle-of-arrival (AoA) of the NLoS path can be estimated. To resolve the blocker's trajectory and the transmitters' locations,the receiver should continuously track the mobile blocker to accumulate suffi-cient numbers of the Doppler frequency and AoA versus time observations. Finally,a gradient-descent-based algorithm is proposed for joint de-tection. With the reconstructed trajectory,the potential link blockage can be predicted. It is demonstrated that the system can achieve decimeter-level localization and trajectory estimation,and predict the blockage time with an error of less than 0.1 s.
mmWave communicationsintegrated sensing and communicationtrajectory trackingpassive sensing
YU Chao、LYU Bojie、QIU Haoyu、WANG Rui
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Department of Electronic and Electrical Engineering,Southern University of Science and Technology,Shenzhen 518000,China
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维普
