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).

翻译：无线通信系统将使用毫米波(mmWave)光谱,这种光谱可以产生额外的雷达功能。在本文中,我们提议在车辆到车辆(V2V)的假设情景中使用IEE 802.11ad波形,进行多目标速度估计技术。我们形成宽梁,以考虑多目标车辆。每部车辆的多普勒转换根据最低平方估计值(LSE)进行估计,使用在IEEE 802.11ad波形中Golay补充序列的自动交错特性获得的圆程延迟,而阶段包装则由适当的两个框架的多普勒转换估计值来补偿。最后,目标车辆的速度是从估计的多普勒转移中获得的。模拟结果表明,拟议的速度估计技术即使在短连贯的处理时间段(CPI)也能达到相当高的精确度。