毫米波MU-MIMO系统中自适应混合预编码器的设计  

Design of Adaptive Hybrid Precoder in mmWave MU-MIMO Systems

作　　者：薛建彬[1] 王佳豪 XUE Jianbin;WANG Jiahao(School of Computer and Communication,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学计算机与通信学院,兰州730050

出　　处：《计算机科学》2023年第S02期713-717,共5页Computer Science

摘　　要：基于毫米波通信和大规模多输入多输出(Multi-input Multi-output,MIMO)技术,构建了适用于蜂窝车联网(C-V2X)等多用户多数据流场景的毫米波大规模MIMO系统,以降低系统的总功耗、硬件复杂度和计算复杂度。设计一种基于比特流的自适应连接大规模MIMO架构,与其他自适应连接架构相比,所提自适应连接架构在阵列分组更小的情况下,使用的移相器和交换开关更少;并且随着阵列分组数的增加,该架构在毫米波多用户MIMO(MU-MIMO)系统中的功耗逐渐降低。仿真结果表明,在采用该架构的毫米波MU-MIMO-OFDM系统中,随着数据流总数的增加,一些现有混合预编码方案可以获得更高的数据传输速率。Based on millimeter-wave(mmWave)communication and massive multi-input multi-output(MIMO)technology,a massive MIMO system for multi-user and multi-data stream scenarios such as cellular vehicle-to-everything(C-V2X)is constructed to reduce the total power consumption,hardware complexity and computational complexity of the system.For this purpose,a bitstream-based adaptive-connected massive MIMO architecture is designed.Compared with other adaptive-connected architectures,the proposed adaptive-connected architecture uses fewer phase shifters and switching switches with smaller arrays.As the number of arrays increases,the power consumption of the architecture in mmWave multi-user MIMO(MU-MIMO)systems decreases gradually.Simulation results show that in mmWave MU-MIMO-OFDM systems utilizing this architecture,some existing hybrid precoding schemes can achieve higher data transmission rates with the increase of the total number of data streams.

关 键 词：自适应连接阵列架构 大规模多输入多输出 毫米波 混合预编码 数据传输速率 

分 类 号：TN929.5[电子电信—通信与信息系统]