基于无线信道衰落模型的智能车路协同系统通信性能分析

发布时间：2018-06-13 04:22

本文选题：智能车路协同系统 + 信道衰落模型　；参考：《清华大学》2015年硕士论文

【摘要】：智能车路协同系统是将车车、车路通信技术、先进的感知技术及信息处理技术、无线互联技术等集成运用于交通系统,旨在实现人、车、路及环境的和谐统一,从而建立起大范围内发挥作用的准确、高效、实时的新一代智能交通系统。目前,国内外学者的主要关注点包括:智能车路协同系统的标准体系的建立、通信协议的设计、信息交互手段和改善交通安全性和效率提升的具体应用等方面,对基于信道衰落模型的车路协同系统的通信性能研究仍处于探索阶段。本文以智能车路协同系统为研究对象,在无线信道衰落模型基础上,对车路、车车之间不同无线网络环境下通信的性能进行分析和评估,主要工作如下:(1)提出了基于无线信道衰落模型的智能车路协同系统通信性能分析框架,该框架包括通信架构、通信基本模式和通信性能评价指标。并在通信基本模式中对车辆节点空间分布模型、信道衰落模型和通信转发模型进行建模分析。(2)搭建和设计了基于信道衰落模型的通信仿真平台,仿真平台实现了对不同信道衰落模型和移动场景的配置,并实现了仿真过程的动态可视化显示及相应的数据处理的功能。(3)为了验证专用短程通信(DSRC)在实际道路环境下的通信效果,本文在北京四环主路上开展基于车车通信的实验,并将IEEE 802.11p仿真结果与该实验结果对比分析。为了验证WiFi无线网络是否可以应用于移动场景的车路协同系统,本文将WiFi网络进行了通信仿真,并将仿真结果与DSRC网络仿真结果进行对比分析。(4)基于对IEEE 802.11a和IEEE 802.11p对比分析结果,本文提出了一种基于IEEE 802.11a的低成本DSRC技术的软硬件解决方案,并对通信模组的硬件实物进行了性能测试,结果表明该方案亦能达到高成本方案的性能。
[Abstract]:Intelligent vehicle-road cooperation system integrates vehicle, vehicle-road communication technology, advanced sensing technology and information processing technology, wireless interconnection technology and so on, aiming at realizing the harmony and unity of human, vehicle, road and environment. Thus, a new generation of intelligent transportation system is established, which is accurate, efficient and real-time. At present, the main concerns of domestic and foreign scholars include the establishment of the standard system of intelligent vehicle-road coordination system, the design of communication protocol, the means of information exchange and the specific application of improving traffic safety and efficiency. The research on the communication performance of vehicle-road cooperative system based on channel fading model is still in the exploration stage. Based on the wireless channel fading model, this paper analyzes and evaluates the communication performance in different wireless network environment between vehicle and vehicle. The main work is as follows: (1) A communication performance analysis framework based on wireless channel fading model is proposed. The framework includes communication architecture, communication basic mode and communication performance evaluation index. The vehicle node spatial distribution model, the channel fading model and the communication forwarding model are modeled and analyzed in the basic communication mode. (2) the communication simulation platform based on the channel fading model is built and designed. The simulation platform realizes the configuration of different channel fading models and mobile scenes. In order to verify the communication effect of the special short-range communication (DSRC) in the actual road environment, the experiment based on the vehicle-vehicle communication is carried out on the main road of the fourth Ring Road in Beijing. The IEEE 802.11p simulation results are compared with the experimental results. In order to verify whether WiFi wireless network can be applied to the vehicle-road cooperative system of mobile scene, the communication simulation of WiFi network is carried out in this paper. Based on the comparative analysis of IEEE 802.11a and IEEE 802.11p, this paper presents a low cost DSRC solution based on IEEE 802.11a. The hardware performance of the communication module is tested, and the results show that the scheme can also achieve the performance of the high cost scheme.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U495;U463.67

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