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Channel Modeling and Simulation for Vehicular Communications

机译：车辆通信信道建模与仿真

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摘要

The interest that exists globally around the so-called intelligent transportation systems (ITS) has fostered a large amount of research activities aimed at developing new wireless communication technologies for the information exchange among vehicles on the move. The design of such technology gained an important momentum when in 1999 the American Federal Communications Commission (FCC) allocated a 75 MHz bandwidth in the 5.9 GHz band for dedicated short-range communications (DSRC) systems. The technology has seen a continuous development and the achievement of several milestones ever since. However, while the future ahead looks promising, the design of radio transceivers for vehicular communications continues to be a complex task, because the high speed at which the vehicles can move poses several new challenges that are not a concern for conventional mobile communication systems. For example, due to the rapidly changing propagation conditions that are typically found in vehicular communication environments, the Doppler shift effects and the nonstationary characteristics of the wireless channel become exacerbated. These issues significantly affect the performance of transceivers that are not optimized to operate over highly dispersive nonstationary channels. Proper channel models are therefore needed that provide insights into the physics of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) radio reception and, at the same time, that lend themselves to mathematical and numerical system performance investigations.
机译：全球对所谓的智能交通系统（ITS）的兴趣催生了大量研究活动，旨在开发新的无线通信技术，用于移动车辆之间的信息交换。1999年，美国联邦通信委员会（FCC）为专用短程通信（DSRC）系统分配了5.9 GHz频段的75 MHz带宽，这一技术的设计获得了重要的推动。自那以后，这项技术不断发展，并取得了若干里程碑式的成就。然而，尽管未来前景光明，但用于车辆通信的无线电收发器的设计仍然是一项复杂的任务，因为车辆的高速移动带来了一些传统移动通信系统不关心的新挑战。例如，由于通常在车辆通信环境中发现的快速变化的传播条件，多普勒频移效应和无线信道的非平稳特性变得更加严重。这些问题严重影响了未经优化以在高度分散的非平稳信道上运行的收发器的性能。因此，需要建立适当的信道模型，以便深入了解车对车（V2V）和车对基础设施（V2I）无线电接收的物理特性，同时也有助于进行数学和数值系统性能研究。

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