摘要
In this paper,we investigate networkassisted full-duplex(NAFD)cell-free millimeter-wave(mmWave)massive multiple-input multiple-output(MIMO)systems with digital-to-analog converter(DAC)quantization and fronthaul compression.We propose to maximize the weighted uplink and downlink sum rate by jointly optimizing the power allocation of both the transmitting remote antenna units(T-RAUs)and uplink users and the variances of the downlink and uplink fronthaul compression noises.To deal with this challenging problem,we further apply a successive convex approximation(SCA)method to handle the non-convex bidirectional limited-capacity fronthaul constraints.The simulation results verify the convergence of the proposed SCA-based algorithm and analyze the impact of fronthaul capacity and DAC quantization on the spectral efficiency of the NAFD cell-free mmWave massive MIMO systems.Moreover,some insightful conclusions are obtained through the comparisons of spectral efficiency,which shows that NAFD achieves better performance gains than cotime co-frequency full-duplex cloud radio access network(CCFD C-RAN)in the cases of practical limited-resolution DACs.Specifically,their performance gaps with 8-bit DAC quantization are larger than that with1-bit DAC quantization,which attains a 5.5-fold improvement.
基金
supported in part by the National Natural Science Foundation of China(NSFC)under Grants 61971127,61871465,61871122
in part by the National Key Research and Development Program under Grant 2020YFB1806600
in part by the open research fund of National Mobile Communications Research Laboratory,Southeast University under Grant 2022D11。
作者简介
The corresponding author:Zhang Yu,received the Ph.D degree in information and communication engineering from Southeast University,China,in 2020.Since January 2021,he has been a Lecturer with the School of Electronic&Information Engineering,Nanjing University of Information Science&Technology.From May 2014 to February 2015,he was a Baseband Software Development Engineer with ZTE Corporation.From December 2017 to December 2018,he was a Visiting Student with the University of Victoria,Canada.His current research interests include massive MIMO and millimeter-wave communications.Email:zhangyu@nuist.edu.cn;Li Jiamin,received the B.S.and M.S.degrees in communication and information systems from Hohai University,Nanjing,China,in 2006 and 2009,respectively,and the Ph.D degree in information and communication engineering from Southeast University,Nanjing,in 2014.He has been a Lecturer with the National Mobile Communications Research Laboratory,Southeast University,since 2014.His research interests include massive MIMO,distributed antenna systems,and cooperative communications.Email:jiaminli@seu.edu.cn;Fan Qingrui,received the B.S.degree in communication engineering from Anhui Normal University,Wuhu,China,in 2020,and the M.S.degree in electronic information from Southeast University,Nanjing,China,in 2023.His research interests include cell-free mmWave massive MIMO,convex optimization,and multi-agent deep reinforcement learning.Email:fanqingrui@seu.edu.cn;Zhu Pengcheng,received the B.S.and M.S.degrees in electrical engineering from Shandong University,Jinan,China,in 2001 and 2004,respectively,and the Ph.D degree in communication and information science from Southeast University,Nanjing,China,in 2009.He has been a Lecturer with the National Mobile Communications Research Laboratory,Southeast University,since 2009.His research interests include communication and signal processing,limited feedback techniques,and distributed antenna systems.Email:p.zhu@seu.edu.cn;Wang Dongming,received the B.S.degree from Chongqing University of Posts and Telecommunications,Chongqing,China,in 1999,the M.S.degree from Nanjing University of Posts and Telecommunications,Nanjing,China,in 2002,and the Ph.D degree from Southeast University,Nanjing,in 2006.He joined the National Mobile Communications Research Laboratory,Southeast University,in 2006,where he has been an Associate Professor,since 2010.His research interests include turbo detection,channel estimation,distributed antenna systems,and large-scale MIMO systems.Email:wangdm@seu.edu.cn;Wu Hao,received the B.S.degree from Beijing University of Posts and Telecommunications,Beijing,China,in 2010,and the Ph.D degree from Southeast University,Nanjing,China,in 2015,both in electrical engineering.He is now with the State Key Laboratory of Mobile Network and Mobile Multimedia Technology,ZTE Corporation,Shenzhen,China,where he is a senior expert on wireless communication research and standardization.During 2011 to 2012,he was a visiting student at Columbia University,New York,NY,USA.Since 2016,Dr.Wu has been a delegate representing ZTE Corporation in 3GPP RAN and RAN1,to which he has submitted numerous contributions on 4G and 5G technologies including MIMO,UE power saving,positioning and so on.His research interests include MIMO wireless communications,antenna array systems,and signal processing.Email:wu.hao89@zte.com.cn;You Xiaohu,received the B.S.,M.S.,and Ph.D degrees in electrical engineering from Nanjing Institute of Technology,Nanjing,China,in 1982,1985,and 1989,respectively.From 1987 to 1989,he was with Nanjing Institute of Technology,as a Lecturer.Since 1990,he has been with Southeast University,first as an Associate Professor and later as a Professor.He is also the Chief of the Technical Group of China’s 3G/B3G Mobile Communication Research and Development Project.His research interests include mobile communications,adaptive signal processing,and artificial neural networks with applications to communications and biomedical engineering.He received the Excellent Paper Prize from China Institute of Communications,in 1987,the 1989 Young Teacher Award of Fok Ying Tung Education Foundation,State Education Commission of China,and the Elite Outstanding Young Teacher Awards from Southeast University,in 1990,1991,and 1993.Email:xhyu@seu.edu.cn.
