车-车通信时变信道多径动态簇建模研究

Radio propagation and channel modeling for vehicle-to-vehicle wireless communication scenario is the basis for network design of vehicle-to-vehicle wireless communication. It is of great importance to the safety and efficiency of vehicular transportation. Based on realistic measurements, theoretical analysis, algorithm developments, modeling, and laboratory simulations, we conduct the in-depth research on the complex mechanism of multipath clustering, theories of time-variant channel measurement and parameter estimation, measure of multipath similarity in time-variant channel, multipath clustering theory and dynamic tracking algorithm of clustered multipath components, dynamic birth and death process of multipath clusters and cluster-based non-stationary channel modeling. Establishing a set of methods for vehicle-to-vehicle time-variant channel measurement, parameter estimation, multipath clustering, tracking, and modeling. Establishing simulation methods, which satisfies the clustering and non-stationarity characteristics of vehicle-to-vehicle time-variant channel, with low complexity and fast simulation speeds. With the in-depth investigations on the fundamental theory of radio propagation for vehicle-to-vehicle wireless communications, this project aims to establish multipath clustering theory of time-variant channel and the cluster-based multipath dynamic birth and death models, and make research achievements with independent intellectual property rights. It guides the engineering construction for vehicular communication systems, and guarantees the safety and high efficiency of vehicular transportations.

车-车无线通信场景下电波传播与信道建模研究是车-车无线通信网络设计的基础，是影响车载运输安全和效率的重要因素。本课题拟采用实地测量、理论分析、算法开发、模型建立、实验室仿真相结合的方法，研究车-车时变信道下复杂多径分簇机制；车-车时变信道测量理论与参数萃取方法；时变信道多径相似度测度、多径分簇理论与动态多径簇跟踪算法；多径簇的动态生灭规律与非平稳信道多径簇建模理论。创建车-车时变信道测量、参数估计、多径分簇、跟踪和模型建立方法，建立满足车-车时变信道多径分簇与非平稳特征、复杂度适中的快速、精确的无线信道仿真方法。本课题旨在通过对车-车无线通信环境下的电波传播基础理论的研究，创建时变信道多径分簇理论，建立车-车典型场景下多径动态簇的生灭模型，取得具有自主知识产权的研究成果，指导车载通信系统工程建设，保障车载运输安全和效率。

车-车无线通信场景下电波传播与信道建模研究是车-车无线通信网络设计的基础，是影响车载运输安全和效率的重要因素。本项目在车-车信道多径随机生灭机制、信道簇结构参数提取与分析、车载环境多径簇动态跟踪、非平稳簇结构信道建模等方面开展了深入研究，所取得的成果如下：基于测试研究了非平稳车-车高速移动信道多径随机生灭机制并提出了仿真方法，针对车-车信道簇结构建模的需求设计了无线信道多径分簇算法；针对时变信道多径簇动态变化的特点分别提出了基于角度功率谱和基于最大和概率的动态多径簇跟踪算法；提出了基于多重散射电波传播理论，可用于分析高速移动场景下信道的衰落特性与传播机制；基于测量开展了车-车典型场景下信道特性的分析，并研究了多径簇的统计特征，进而建立了基于几何的车-车簇结构非平稳信道模型。本课题通过对车-车无线通信环境下的电波传播基础理论的研究，创建了时变信道多径分簇理论，建立了车-车典型场景下多径动态簇的生灭模型，取得具有自主知识产权的研究成果，指导车载通信系统建设，保障车载运输安全和效率。..本项目总体进展顺利，在项目支持下，发表论文22篇，包括11篇IEEE系列的本领域国际权威SCI期刊论文，并有2篇论文获国际会议最佳论文奖。出版专著1部；获授权发明专利2项，申请发明专利2项（含1项美国专利）；培养博士生6名，硕士生4名；获得教育部自然科学二等奖1项、中国电子学会优秀博士学位论文奖1项、入选中国科协青年人才托举工程。