Cell-Free Massive MIMO中没有小区,所有服务天线一致地为所有用户终端服务。 Cell-Free Massive MIMO目前只是一个新概念;它是MIMO与协作多点联合处理(Comp)的新实用且可扩展的版本。在某种程度上是基于良好传播和信道化化特性Massive MIMO技术的新应用。
One of the major technological breakthroughs to cope with these unprecedented demands is the cell-free (CF) massive multiple-input multiple-output (mMIMO) systems. In CF mMIMO, a large number of distributed access points are connected to a central processing unit, and serve a smaller number ...
cell-free massive MIMOdistributed antenna systemsmassive MIMOuser-centricThe recently commercialized fifth-generation (5G) wireless communication networks achieved many improvements, including air interface enhancement, spectrum expansion, and network intensification by several key technologies, such as massive ...
We consider the downlink of Cell-Free Massive MIMO systems, where a very large number of distributed access points (APs) simultaneously serve a much smaller number of users. Each AP uses local channel estimates obtained from received uplink pilots and applies conjugate beamforming to transmit data...
算法1的性能最好,相比较于Separate_OPT_CF,算法1对M=20,K=8的时间减少高达66%,对M=80,k=10的时间减少了64%。对比图可以看到功率和处理频率联合分配的优势,以及使用mMIMO来支持FL的好处。由于mMIMO技术,随着天线数量的增加,每一个UE的数据速率也会增加,导致一次FL迭代的执行时间减少了40%,如图2所示。
Invalid JSONSimulation routines for Cell-Free Massive MIMO for URLLC: A Finite-Blocklength Analysis, Alejandro Lancho, Giuseppe Durisi and Luca Sanguinetti, IEEE Transactions on Wireless Communications
无小区大规模MIMO（CF-mMIMO）系统，如果在可重新配置的智能表面（RIS）的帮助下，将大规模AP组合，可...
去蜂窝网络+正交时频空+通感一体化 Power Allocation for Cell-Free Massive MIMO ISAC Systems with ...
Cell-free (CF) massive multiple-input multiple-output (MIMO) systems, which exploit many geographically distributed access points to coherently serve user equipment via spatial multiplexing on the same time-frequency resource, has become a vital component of the next-generation mobile communication ...
本发明属于通信技术领域,具体地,涉及在Cell-freeMassiveMIMO下的正交多址与非正交多址的结合方法。 背景技术 (1)非正交多址,非正交多址作为无线通信中最重要的核心技术之一,多址接入技术一直是5G研究的一个重点。在4G系统中采用的多址接入技术为正交频分多址技术(OrthogonalFrequencyDivisionMultipleAccess,OFDMA),它...