迫零混合预编码车联网系统遍历能效研究  

On Ergodic Energy Efficiency of IoV Systems with ZF Hybrid Precoders

作　　者：刁宇璇 张震 郭继冲 李韵涵 张洪[3] DIAO Yuxuan;ZHANG Zhen;GUO Jichong;LI Yunhan;ZHANG Hong(School of Electronic and Information Engineering,Suzhou University of Science and Technology,Suzhou 215000,China;Shaanxi Transportation Holding Group Co.,Ltd.,Operations Management Branch,Xi'an 710065,China;Beijing Aerospace Measurement and Control Technology Co.,Ltd.,Beijing 100043,China)

机构地区：[1]苏州科技大学电子与信息工程学院,江苏苏州215000 [2]陕西交通控股集团有限公司运营管理分公司,陕西西安710065 [3]北京航天测控技术有限公司,北京100043

出　　处：《移动通信》2023年第12期44-49,70,共7页Mobile Communications

基　　金：江苏省高等学校基础科学(自然科学)研究面上项目“通信感知一体化空口关键技术研究”(23KJB510031);国家自然科学基金面上项目“时频双选信道中无导频开销的波束空间通信方法研究”(62271085)。

摘　　要：车联网作为未来智能交通系统的重要组成部分,在城乡道路部署大量具有通信特性的基础设施,包括5G基站、传感器、路边单元等。为创造绿色可持续发展的未来,减少车联网通信开销,制定能效更高的基础设施部署方案是重要手段之一。目前相关研究关注系统瞬时能效,而瞬时能效无法处理信道状态信息的随机性,不能给出对于车联网基础设施部署的全面考量。针对该问题,考虑采用迫零混合预编码结构的收发机结构,对基于毫米波大规模MIMO技术的车联网遍历能效展开研究。首先研究了异构基站下V2X通信信道模型、收发机架构,建立一般性的车联网系统模型。其次在考虑车辆接入不同基站的情况下计算能量效率,通过离散化推导出一种异构系统遍历能效计算公式。最后进行了遍历能效研究的仿真分析。结果表明遍历能效研究可以提供更高能效的基站部署,有效减少了通信能耗。As an important part of the future intelligent transportation system,the Internet of Vehicles(loV)deploys a large number of infrastructures with communication characteristics in urban and rural roads,including 5G base stations,sensors,roadside units,etc.In order to create a green and sustainable future and reduce the communication overhead of the Internet of vehicles,formulating a more energy-effcient infrastructure deployment scheme is one of the important means.At present,related research focuses on the instantaneous energy efficiency of the system,but the instantaneous energy efficiency cannot deal with the randomness of channel state information and cannot give a comprehensive consideration for the deployment of IoV infrastructure.To solve this problem,this paper considers the use of zero forcing hybrid precoding transceiver structure,and conducts research on the ergodic energy efficiency of the Vehicle-to-everything based on millimeter wave large-scale MIMO technology.First,consider various types of base stations,and establish a general Vehicle-to-everything system model.Secondly,considering the connection of vehicles to different base stations,calculate the discretized ergodic energy efficiency and obtain statistical data.Finally,a simulation analysis was conducted to investigate the ergodic energy efficiency.The results indicate that ergodic energy efficiency research can provide higher energy efficient base station deployment and effectively reduce communication energy consumption.

关 键 词：混合预编码 5G V2X 能量效率 

分 类 号：TN929.5[电子电信—通信与信息系统]