Angle-Dependent Path Loss Measurements Impacted by Car Body Attenuation in 2.45 Ghz ISM Band

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI:10.1109/VETECS.2012.6240180

M. Blesinger, Thomas Gehrsitz, P. Fertl, E. Biebl, J. Eberspächer, O. Klemp, H. Kellermann

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引用次数: 12

Abstract

In the past few years more and more wireless applications (e.g. WLAN and Bluetooth) have migrated into the automotive domain. With the increasing number of devices, coexistence investigations in the 2.45 GHz ISM band are gaining importance to enable reliable communications with real time requirements like voice transmission and streaming applications. This paper presents initial results on angle dependent path loss measurements impacted by the influence of a car body on electro-magnetic wave propagation. To this effect, a measurement methodology was developed to gather the attenuation effects of the car according to different antenna positions and measurement angles. Various kinds of attenuation measurements were performed. Vehicle shell attenuation measurements were transformed into angular-dependent path loss metrics and related to vehicle-specific attenuation properties like window inserts, roof columns, trunk or engine hood. Focus of attention was drawn to free space attenuation and intra-vehicle attenuation measurements.

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2.45 Ghz ISM频段受车身衰减影响的角相关路径损耗测量

在过去的几年中，越来越多的无线应用(例如WLAN和蓝牙)已经迁移到汽车领域。随着设备数量的增加，2.45 GHz ISM频段的共存研究对于实现语音传输和流媒体应用等实时要求的可靠通信变得越来越重要。本文给出了受车身对电磁波传播影响的角度相关路径损耗测量的初步结果。为此，开发了一种测量方法，根据不同的天线位置和测量角度来收集汽车的衰减效应。进行了各种衰减测量。车辆外壳衰减测量结果被转换为与角度相关的路径损耗指标，并与车辆特定的衰减特性(如车窗嵌件、车顶柱、后备箱或发动机罩)相关。重点关注自由空间衰减和车内衰减测量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

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