Multipair two-way massive MIMO AF relaying with ZFR/ZFT and hardware impairments over high-altitude platforms

作     者：SUN Xiaoli XU Kui XU Youyun MA Wenfeng 

作者机构：PLA University of Science and TechnologyNanjing 210007China Nanjing University of Posts and TelecommunicationsNanjing 210023China 

出 版 物：《Journal of Communications and Information Networks》 (通信与信息网络学报（英文）)

年 卷 期：2016年第1卷第3期

页      面：105-114页

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the Major Research Plan of the National Natural Science Foundation of China(No.91438115) the National Natural Science Foundation of China(Nos.61371123,61301165,61671472) Jiangsu Province Natural Science Foundation(No.BK20160079) Special Financial Grant of The China Postdoctoral Science Foundation(No.2015T81079) China Postdoctoral Science Foundation(No.2014M552612) Jiangsu Postdoctoral Science Foundation(No.1401178C) the Preresearch Project Foundation(No.9140C020306130C02007) 

主　　题：massive MIMO half-duplex full-duplex Rician fading channels hardware impairments 

摘      要：HAPs(High-Altitude Platforms)are one of the most promising alternative infrastructures for providing wireless communications to overcome the shortcomings of terrestrial-tower-based and satellite *** paper investigates a multipair two-way MM-AF(Massive MIMO Amplify-and-Forward)relay system over HAPs,where multiple user pairs exchange information within a pair through a relay with a very large number of antennas,and a HAP channel is modeled to follow a Rician fading distribution because of the presence of a line-of-sight ***,the effect of hardware impairments on a multipair two-way MM-AF system is taken into consideration and is modeled using transmit and receive distortion ***,ZFR/ZFT(Zero-Forcing Reception/Zero-Forcing Transmission)processing matrices of HDR(Half-Duplex Relaying)and FDR(Full-Duplex Relaying)with imperfect channel state information are ***,the asymptotic expressions of an end-to-end SINR are *** analyses and simulation results show that when the number of relay antennas grows very large,the SE(Spectral Efficiency)of an MM-AF relay system is limited by hardware impairments at the users instead of those at the relay,or by other types of ***,the quality of the hardware at a relay can be decreased without significantly degrading performance.