Beam squint effect on high-throughput millimeter-wave communication with an ultra-massive phased array  

作　　者：Zhiqiang WANG Jiawei LIU Jun WANG Guangrong YUE 

机构地区：[1]National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2021年第4期560-570,共11页信息与电子工程前沿（英文版）

基　　金：Project supported by the National Key R&D Program of China(No.2020YFB1805001);the National Natural Science Foundation of China(No.61831004);the Defense Industrial Technology Development Program,China(No.JCKY2016204A603)。

摘　　要：An ultra-massive phased array can be deployed in high-throughput millimeter-wave(mmWave)communication systems to increase the transmission distance.However,when the signal bandwidth is large,the antenna array response changes with the frequency,causing beam squint.In this paper,we investigate the beam squint effect on a high-throughput mmWave communication system with the single-carrier frequency-domain equalization transmission scheme.Specifically,we first view analog beamforming and the physical channel as a spatial equivalent channel.The characteristics of the spatial equivalent channel are analyzed which behaves like frequency-selective fading.To eliminate the deep fading points in the spatial equivalent channel,an advanced analog beamforming method is proposed based on the Zadoff-Chu(ZC)sequence.Then,the low-complexity linear zero-forcing and minimum mean squared error equalizers are considered at the receiver.Simulation results indicate that the proposed ZC-based analog beamforming method can effectively mitigate the performance loss by the beam squint.

关 键 词：Ultra-massive phased array Millimeter-wave(mmWave) Beam squint Zadoff-Chu Single-carrier frequency-domain equalization(SC-FDE) 

分 类 号：TN928[电子电信—通信与信息系统]