Hybrid beamforming design for mm Wave OFDM distributed antenna systems

作     者：Yu ZHANG Dongming WANG Yiming HUO Xiaodai DONG Xiaohu YOU Yu ZHANG;Dongming WANG;Yiming HUO;Xiaodai DONG;Xiaohu YOU

作者机构：National Mobile Communications Research Laboratory Southeast University Purple Mountain Laboratory Southeast University Department of Electrical and Computer Engineering University of Victoria 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2020年第63卷第9期

页      面：231-242+201-203页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：supported in part by National Key Research and Development Program (Grant No. 2018YFE0205902) National Natural Science Foundation of China (NSFC)(Grant Nos. 61871122,61971127) Six Talent Peaks Project in Jiangsu Province 

主　　题：hybrid beamforming distributed antenna systems millimeter wave OFDM delay spread differences synchronization 

摘      要：This paper presents a hybrid beamforming design for millimeter-wave(mm Wave) orthogonal frequency division multiplexing(OFDM) distributed antenna systems(DASs). First, we derive a downlink signal transmission model that considers the delay spread differences(DSDs) caused by the distributed nature of the network. We then propose a cooperative wideband hybrid beamforming method under the transmitting power constraints of each remote access unit. In a simulation study, the proposed method performed comparably to fully-digital beamforming, even when operated with practical finite-resolution phase shifters. We further confirm that the DSDs are the dominant cause of performance degradation in mm Wave OFDM DASs.