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arXiv 1702.03351cs.NI
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基于IEEE 802.11的前向碰撞车载雷达:可行性测试验证

Forward Collision Vehicular Radar with IEEE 802.11: Feasibility Demonstration through Measurements

Enoch R. Yeh, Robert C. Daniels, Robert W. Heath,

摘要:

运输系统中日益增加的安全性和自动化已经导致车辆中雷达和IEEE 802.11专用短程通信(DSRC)的激增。然而,车辆雷达设备的当前实现是昂贵的,使用大量的带宽,并且容易受到多种安全风险的影响。考虑使用IEEE 802.11正交频分复用(OFDM)通信波形来执行雷达功能的可行性。在本文中,我们提出了一种方法,确定平均归一化信道能量从频域信道估计和模型,它作为一个直接的正弦函数的目标范围,使最接近的目标范围估计。此外,我们提出了一种替代车辆前向碰撞检测扩展IEEE 802.11专用短程通信(DSRC)和WiFi技术的雷达,提供了一个基础的联合通信和雷达框架。此外,我们使用现有的IEEE 802.11设备进行实验演示,通过对频域信道估计的算法处理进行最小的修改。本文的结果表明,我们的解决方案提供了类似的准确性和可靠性毫米波雷达设备,只有20 MHz的频谱(两倍DSRC的10 MHz分配),这表明具有联合车辆通信和雷达功能的工业设备的巨大潜力。

英文摘要:

Increasing safety and automation in transportation systems has led to the proliferation of radar and IEEE 802.11 dedicated short range communication (DSRC) in vehicles. Current implementations of vehicular radar devices, however, are expensive, use a substantial amount of bandwidth, and are susceptible to multiple security risks. Consider the feasibility of using an IEEE 802.11 orthogonal frequency division multiplexing (OFDM) communications waveform to perform radar functions. In this paper, we present an approach that determines the mean-normalized channel energy from frequency domain channel estimates and models it as a direct sinusoidal function of target range, enabling closest target range estimation. In addition, we propose an alternative to vehicular forward collision detection by extending IEEE 802.11 dedicated short-range communications (DSRC) and WiFi technology to radar, providing a foundation for joint communications and radar framework. Furthermore, we perform an experimental demonstration using existing IEEE 802.11 devices with minimal modification through algorithm processing on frequency-domain channel estimates. The results of this paper show that our solution delivers similar accuracy and reliability to mmWave radar devices with as little as 20 MHz of spectrum (doubling DSRC's 10 MHz allocation), indicating significant potential for industrial devices with joint vehicular communications and radar capabilities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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