移动通信2024，Vol.48Issue(12)：86-96,11.DOI:10.3969/j.issn.1006-1010.20241025-0009
毫米波低功耗混合波束赋形架构及算法
Millimeter-Wave Energy-Efficient Hybrid Beamforming Architecture and Algorithm
摘要
Abstract
This paper studies energy-efficient hybrid beamforming architectures and its algorithm design in millimeter-wave communication systems,aiming to address the challenges faced by existing hybrid beamforming due to low hardware flexibility and high power consumption.To solve the problems of existing hybrid beamforming,a novel energy-efficient hybrid beamforming architecture is proposed,where radio-frequency(RF)switch networks are introduced at the front and rear ends of the phase shifter network,enabling dynamic connections between the RF chains and the phase shifter array as well as the antenna array.The system model of the proposed architecture is established,including digital precoding and analog precoding processes,and the practical hardware limitations such as quantization errors of the digital-to-analog converter(DAC)and phase shifter resolution.In order to maximize the energy efficiency,this paper derives an energy efficiency model including spectral efficiency and system power consumption,and a hybrid precoding algorithm is proposed based on block coordinate descent to iteratively optimize the digital precoding matrix,analog precoding matrix,and DAC resolution.Simulation results under the NYUSIM-generated millimeter-wave channels show that the proposed hybrid beamforming architecture and precoding algorithm have higher energy efficiency than existing representative architectures and precoding algorithms under complete and partial channel state information,while the loss of spectral efficiency compared to fully connected architecture is less than 20%.关键词
毫米波/混合波束赋形/低功耗/块坐标下降/交替最小化Key words
millimeter-wave/hybrid beamforming/low power consumption/block coordinate descent/alternating minimization分类
信息技术与安全科学引用本文复制引用
张洪浦,郭玉路,薛刘荀,刘星晨,孙舒,高锐锋,喻翔昊,陶梅霞..毫米波低功耗混合波束赋形架构及算法[J].移动通信,2024,48(12):86-96,11.基金项目
国家自然科学基金"毫米波全息超表面的无线信道特性研究"(62271310) （62271310）
国家自然科学基金"低空信道智能建模与预测推理"(62431014) （62431014）
中央高校基本科研业务费专项资金 （）
南通市自然科学基金"面向海洋通信网络的平滑低时延分组传输方法"(JC2023074) （JC2023074）
香港研究资助局优配研究金(16212922) （16212922）
卫星导航技术重点实验室(WXDHS2023105) （WXDHS2023105）
