Cell free Massive MIMO distributes antennas to cover all users in an area without the need to divide the area into cells. Realization of such systems in practice requires some big challenges to be resolved first. One of them is the antenna assignment to the users, which is studied in this...
单位代码: 10293 密级: 硕士学位论文 论文题目 :Cell-free 大规模 MIMO 系统关键技术研究 1016010103 尹旭东 戴建新 通信与信息系统 移动通信与无线技术 工学硕士 二零一九年四月 学号姓名导 师学科专业研究方向申请学位类别论文提交日期 阅读了该文档的用户还阅读了这些文档 58 p. 柳叶马鞭草组培快繁及再生体系建立...
im 摘要 Cel l -Free 大规模 M lMO(Mass ive Mu ltip le - Input Mu ltip le -Output, Mass ive M 1MO) 通过部署成百上千个无线接入点(Access Points, APs) , 采用时分双工 (Time D iv ision D叩 lexing, TDD)操作模式 , 利用同 一时频资源服务于所有用户 (User Equ ipment, UE ) , 并连...
Cell-free mMIMO systems typically use one of two implementations: centralized or distributed, as illustrated in this figure. In the centralized implementation, the CPU performs physical layer processing while the APs relay signals between the CPU and the UEs. In the distributed implementation, the ...
Cell-Free Massive MIMO: A Survey 作者:Elhoushy, Salah; Ibrahim, Mohamed; Hamouda, Walaa* 来源:IEEE Communications Surveys and Tutorials, 2022, 24(1): 492-523. DOI:10.1109/COMST.2021.3123267 5G mobile communication Systems operation Fading channels ...
Cell free Massive Multi-input Multi-output (m-MIMO) is considered as a promising technology towards the development of 5G and beyond 5G networks. This network has the capability of deploying a large number of access points over the vast geographical area to provide service to small number of ...
【摘要】Cell-free(CF)multiple-input multiple-output(MIMO)is a promising technique to enable the vision of ubiquitous wireless connectivity for next-generation network communications.Compared to traditional co-located massive MIMO,CF MIMO allows geographically distributed access points(APs)to serve all use...
Cell-Free 大规模 MIMO(Massive Multiple-Input Multiple-Output,Massive MIMO)通过部署成百上千个无线接入点(Access Points,APs),采用时分双工(Time Division Duplexing,TDD)操作模式,利用同一时频资源服务于所有用户(User Equipment,UE),并连接中央处理单元(Central Processing Unit,CPU)进行上下行用户传输和信号处理,...
In this paper, we investigate multi-task OtA FL in Cell-free mMIMO systems. We propose optimal designs of transmit coefficients and receive combining at different levels of cooperation among the access points, aiming to minimize the sum of OtA model aggregation errors across all FL groups. ...
This paper derives error bounds for Over-the-Air Federated Learning in a Cell-free MIMO system and formulates an optimization problem to minimize optimality gap via joint optimization of power control and beamforming. We introduce the MOP-LOFPC algorithm, which employs Lyapunov optimization to ...