Full-spectrum cell-free RAN for 6G systems: system design and experimental results

作     者：Dongming WANG Xiaohu YOU Yongming HUANG Wei XU Jiamin LI Pengcheng ZHU Yanxiang JIANG Yang CAO Xinjiang XIA Ziyang ZHANG Qingji JIANG Pan WANG Dongjie LIU Kang ZHENG Mengting LOU Jing JIN Qixing WANG Jiangzhou WANG 

作者机构：National Mobile Communications Research Laboratory Southeast University Purple Mountain Laboratories China Mobile Research Institute School of Engineering University of Kent 

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

年 卷 期：2023年第66卷第3期

页      面：80-93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 Nos. 2020YFB1807205, 2020YFB1806608) Research and Development Project in the Key Areas of Guangdong Province (Grant No. 2020B0101120003) Southeast-China Mobile Research Institute Joint Innovation Center by Major Key Project of PCL (Grant No. PCL2021A01-2) 

主　　题：6G scalable cell-free massive MIMO cell-free radio access network prototype system 

摘      要：With distributed transceivers and scalable cooperative transmission, cell-free massive multipleinput multiple-output(CF-m MIMO) technology eliminates the “cells of traditional mobile communications,thereby significantly improving the performance of wireless networks. CF-m MIMO is considered as a major technical tool for achieving the key performance indicators of sixth generation(6G) mobile communication systems. In this paper, a scalable implementation architecture for CF-m MIMO is proposed, based on which potential key technologies such as channel information acquisition, transceiver design, dynamic user and access point association, and novel duplexing are introduced. Finally, based on low-cost commercial access points, a CF-m MIMO testbed with 64 transmit and receive antennas is developed, and the performance of the distributed receiver design is evaluated.