Channel Modeling And Channel Equalization Algorithm And FPGA Implementation In Vehicle Network System

Internet of things technology to promote the third wave of global information industry,VANET as the leader in the Internet of things industry,has a very broad prospects for development in the world.Throughout the world,VANET has become a national competition and has important strategic significance of the industry.The traditional automobile manufacturing enterprises as well as the information internet companies are interested in this huge cake of VANET,increased investment in the industry,and promote the development of vehicle network technology.At present,the VANET is mainly to strengthen traffic safety,enhance the driver experience comfort,solve urban traffic congestion and other aspects have been a certain harvest.In the vehicle communication system,using the DSRC short distance communication protocol,the direct communication between the vehicle and the vehicle is realized,and the communication delay is reduced.In recent years,researches on communication technology are mostly concentrated on the cellular mobile communication system,however,the cellular mobile communication channel propagation characteristics of vehicle communication channel between vehicles compared to the traditional has changed,therefore,the study of car networking,communication channel between the car and the car is very important.This study is mainly based on vehicle networking platform,modeling method of vehicle network communication channel between the vehicle and the vehicle system,research on channel equalization algorithm and equalizer design,the main contents are as follows:Firstly,the mathematical basis of the mobile communication channel is introduced,and the mathematical basis of the vehicle moving model is studied.This paper analyzes the actual propagation environment of the vehicle to the vehicle,and improves the existing algorithm for the moving vehicle,and obtains the LOS model which contains the two components.Then,we analyze and study several existing algorithms of channel equalization,and simulate the channel equalization algorithm in Matlab simulation software,and get the performance information and the advantages and disadvantages of the algorithm.Through the analysis of the constant modulus algorithm and decision directed algorithm modified constant modulus algorithm,the advantages and disadvantages of the algorithm,this paper proposes a channel equalization algorithm to guide the algorithm combining the modified constant modulus algorithm and the judgment,and the algorithm of practical performance of the vehicle in the vehicle communication environment is verified by simulation.At last,this paper designs the hardware module of equalizer which is studied by the channel equalization algorithm.The FPGA design of each sub module in the equalizer is analyzed and verified by the software.