面向多用户接入的无线通信技术在物联网环境下的资源分配与协同传输研究  

Research on Resource Allocation and Cooperative Transmission of Multi-User Access Oriented Wireless Communication Technology in the Internet of Things Environment

作　　者：李轶骥[1] LI Yiji(Science and Technology Support Center,Sichuan Academy of Agricultural Sciences,Chengdu 610066,China)

机构地区：[1]四川省农业科学院科技保障中心,四川成都610066

出　　处：《通信电源技术》2024年第13期172-174,共3页Telecom Power Technology

摘　　要：为探讨面向多用户接入的无线通信技术在物联网环境下的资源分配与协同传输问题,深入研究无线通信技术、多用户接入技术及物联网环境下的资源分配技术,提出结合正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)和多用户多输入多输出(Multi User Multiple Input Multiple Output,MU-MIMO)的解决方案。该方案在吞吐量、延迟、用户支持数及频谱利用率等方面均表现出显著优势。在研究中,采用OFDMA技术将无线信道划分为多个正交子信道,允许多个用户在同一时间、同一频段内进行通信。结合MU-MIMO技术,实现多个用户在同一时间内与基站进行通信,提高了网络吞吐量和容量。结合使用OFDMA和MU-MIMO技术的方案,吞吐量达到了1300 Mb/s,明显高于单独使用OFDMA的800 Mb/s和单独使用MU-MIMO的1000 Mb/s。该方案的延迟降低到了10 ms,用户支持数多达24个,频谱利用率高达90%。In order to explore the resource allocation and cooperative transmission of multi-user access oriented wireless communication technology in the Internet of Things environment.The wireless communication technology,multi-user access technology and resource allocation technology under the environment of Internet of Things are deeply studied,and the solution combining Orthogonal Frequency Division Multiple Access(OFDMA)and Multi-User Multiple Input Multiple Output(MU-MIMO)is proposed.This scheme shows significant advantages in throughput,delay,user support and spectrum utilization.In this study,OFDMA technology is used to divide the wireless channel into multiple orthogonal sub-channels,allowing multiple users to communicate at the same time and in the same frequency band.Combined with MU-MIMO technology,multiple users can communicate with the base station at the same time,and the network throughput and capacity are improved.The scheme using the combination of OFDMA and MU-MIMO technology achieved a throughput of 1300 Mb/s,significantly higher than 800 Mb/s using OFDMA alone and 1000 Mb/s using MU-MIMO alone.The solution’s latency is reduced to a minimum of 10 ms,user support is up to 24,and spectrum utilization is as high as 90%.

关 键 词：多用户 无线通信技术 物联网 资源分配 

分 类 号：TN929.5[电子电信—通信与信息系统] TP391.44[电子电信—信息与通信工程]