基于IEEE 802.11ad波形的多车辆速度估计
Multi-Vehicle Velocity Estimation Using IEEE 802.11ad Waveform
摘要：
无线通信系统将使用毫米波（mmWave）频谱，这可以实现额外的雷达功能。在本文中，我们提出了一种多目标速度估计技术，使用IEEE 802.11ad波形在车辆到车辆（V2V）的情况下。我们形成一个宽波束来考虑多个目标车辆。利用IEEE 802.11ad波形中Golay互补序列的自相关特性获得的往返延迟，通过最小二乘估计（LSE）估计每辆车的多普勒频移，并通过适当两帧的多普勒频移估计来补偿相位包裹。最后，由多普勒频移估计得到目标车辆的速度。仿真结果表明，所提出的速度估计技术可以达到显着的高精度，即使在短的相干处理间隔（CPI）。
英文摘要：
Wireless communication systems are to use millimeter-wave (mmWave) spectra, which can enable extra radar functionalities. In this paper, we propose a multi-target velocity estimation technique using IEEE 802.11ad waveform in a vehicle-to-vehicle (V2V) scenario. We form a wide beam to consider multiple target vehicles. The Doppler shift of each vehicle is estimated from least square estimation (LSE) using the round-trip delay obtained from the auto-correlation property of Golay complementary sequences in IEEE 802.11ad waveform, and the phase wrapping is compensated by the Doppler shift estimates of proper two frames. Finally, the velocities of target vehicles are obtained from the estimated Doppler shifts. Simulation results show the proposed velocity estimation technique can achieve significantly high accuracy even for short coherent processing interval (CPI).
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