北京交通大学学报2024，Vol.48Issue(5)：30-38,9.DOI:10.11860/j.issn.1673-0291.20230149
非完美CSI下基于D2D通信的V2X频谱分配方案
V2X spectrum allocation scheme based on D2D communication with imperfect CSI
摘要
Abstract
In Vehicle to Everything-Device to Device(V2X-D2D)communication scenarios,the rapid time-variation of channels often prevent the Base Station(BS)from acquiring perfect Channel State Information(CSI).To address the limitations that the existing spectrum allocation schemes are not applicable to V2X-D2D scenarios,considering constraints such as Vehicle-to-Vehicle(V2V)link reliability,maximum transmission power,and spectrum reuse,a scenario model and communication model for V2X scenarios are established.This study specifies the optimization objective of maximizing the ergodic capacity of Vehicle-to-Infrastructure(V2I)links while ensuring V2V link reliability.Closed-form expressions are derived for the outage probability of V2V links and the ergodic capacity of V2I links,accounting for the effects of channel time-variations.For spectrum allocation in one-to-one mode,a fast spectrum allocation scheme based on the improved Hungarian algorithm is proposed.For one-to-many mode,a spectrum allocation scheme based on graph coloring and preference lists is developed.Simulation results show that the improved Hungarian algorithm-based scheme achieves higher access rates and lower complexity compared to existing algorithms,while the graph coloring-preference list scheme offers superior access rates and spectrum utilization.关键词
无线通信/设备到设备/车联网/频谱分配/非完美信道状态信息Key words
wireless communication/Vehicle to Everything(V2X)/Device to Device(D2D)/spectrum allocation/imperfect Channel State Information(CSI)分类
信息技术与安全科学引用本文复制引用
权仕鑫,孙志国,孙溶辰,刘留..非完美CSI下基于D2D通信的V2X频谱分配方案[J].北京交通大学学报,2024,48(5):30-38,9.基金项目
国家自然科学基金(62001139) National Natural Science Foundation of China(62001139) （62001139）
