CELL-FREE

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Preamble slice orderly queue access scheme in cell-free dense communication systems
《Digital Communications and Networks》2025年第1期126-135,共10页Jun Sun Mengzhu Guo Jian Liu 
supported in part by the National Natural Science Foundation of China under grants 61771255;in part by the Provincial and Ministerial Key Laboratory Open Project under grant 20190904;in part by the Key Technologies R&D Program of Jiangsu (Prospective and Key Technologies for Industry)under Grants BE2022067,BE2022067-1 and BE2022067-2。
High reliability applications in dense access scenarios have become one of the main goals of 6G environments.To solve the access collision of dense Machine Type Communication(MTC)devices in cell-free communication sys...
关键词：Machine type communication Random access Reinforcement learning Access success probability Federated learning 
Passive Integrated Sensing and Communication Scheme Based on RF Fingerprint Information Extraction for Cell-Free RAN
《China Communications》2025年第1期171-181,共11页Yu Jingxuan Zeng Fan Li Jiamin Liu Feiyang Zhu Pengcheng Wang Dongming You Xiaohu 
supported in part by the National Key Research and Development Program under Grant(2021YFB2900300);by the National Natural Science Foundation of China(NSFC)under Grants 61971127,61871122;by the Southeast University-China Mobile Research Institute Joint Innovation Center,and by the Major Key Project of PCL(PCL2021A01-2).
This paper investigates how to achieve integrated sensing and communication(ISAC)based on a cell-free radio access network(CF-RAN)architecture with a minimum footprint of communication resources.We propose a new passi...
关键词：CF-RAN ISAC passive sensing RF fingerprinting 
A Hybrid Small-Cell and Clustered Cell-Free Massive MIMO System under Mobility Scenarios
《China Communications》2024年第12期49-65,共17页Lu Guangyan Li Lihua Tian Hui 
This work was supported by the China National Key Research and Development Plan(No.2020YFB1807204).
Recently,cell-free(CF)massive multipleinput multiple-output(MIMO)becomes a promising architecture for the next generation wireless communication system,where a large number of distributed access points(APs)are deploye...
关键词：access point(AP)selection clustered cell-free Doppler shift effect massive multiple-input multiple-output(MIMO) small-cell 
Network-Assisted Full-Duplex Cell-Free mmWave Massive MIMO Systems with DAC Quantization and Fronthaul Compression
《China Communications》2024年第11期75-87,共13页Li Jiamin Fan Qingrui Zhang Yu Zhu Pengcheng Wang Dongming Wu Hao You Xiaohu 
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。
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 compre...
关键词：cell-free massive MIMO DAC quantization millimeter-wave network-assisted full-duplex 
Deep Reinforcement Learning Based Joint Cooperation Clustering and Downlink Power Control for Cell-Free Massive MIMO
《China Communications》2024年第11期1-14,共14页Du Mingjun Sun Xinghua Zhang Yue Wang Junyuan Liu Pei 
supported by Guangdong Basic and Applied Basic Research Foundation under Grant 2024A1515012015;supported in part by the National Natural Science Foundation of China under Grant 62201336;in part by Guangdong Basic and Applied Basic Research Foundation under Grant 2024A1515011541;supported in part by the National Natural Science Foundation of China under Grant 62371344;in part by the Fundamental Research Funds for the Central Universities;supported in part by Knowledge Innovation Program of Wuhan-Shuguang Project under Grant 2023010201020316;in part by Guangdong Basic and Applied Basic Research Foundation under Grant 2024A1515010247。
In recent times,various power control and clustering approaches have been proposed to enhance overall performance for cell-free massive multipleinput multiple-output(CF-mMIMO)networks.With the emergence of deep reinfo...
关键词：cell-free massive MIMO CLUSTERING deep reinforcement learning power control 
Distributed Cell-Free Massive MIMO Versus Cellular Massive MIMO Under UE Hardware Impairments
《Chinese Journal of Electronics》2024年第5期1274-1285,共12页Ning LI Pingzhi FAN 
supported by the National Natural Science Foundation of China(Grant No.62020106001).
This paper first investigates and compares the uplink spectral efficiency(SE)of distributed cell-free massive multiple-input multiple-output(mMIMO)and cellular mMIMO networks,both with user equipment(UE)hardware impai...
关键词：Massive multiple-input multiple-output(mMIMO) Cell-free mMIMO Cellular mMIMO Hardware impairments Uplink Spectral efficiency Energy efficiency Optimal receive combining 
Optimal AP Deployment in Cell-Free Massive MIMO Systems with LoS/NLoS Transmissions:A Stochastic Geometry Approach被引量：1
《China Communications》2024年第9期146-158,共13页Jiang Ling Zhang Qi Zhu Hongbo 
supported in part by the National Natural Science Foundation of China under Grant 62171231;in part by the Jiangsu Provincial Key Research and Development Program(No.BE2020084-1)。
Cell-free massive multiple-input multipleoutput(MIMO)is a promising technology for future wireless communications,where a large number of distributed access points(APs)simultaneously serve all users over the same time...
关键词：cell-free massive MIMO energy efficiency LoS/NLoS transmissions stochastic geometry 
Secure resource allocation against colluding eavesdropping in a user-centric cell-free massive multiple-input multiple-output system
《Frontiers of Information Technology & Electronic Engineering》2024年第4期500-512,共13页Na LI Yuanyuan GAO Kui XU Xiaochen XIA Huazhi HU Yang LI Yueyue ZHANG 
supported by the National Natural Science Foundation of China(Nos.62071485,61671472,and 62271503);the Natural Science Foundation of Jiangsu Province,China(Nos.20201334 and 20181335)。
We investigate the resource allocation problem of a cell-free massive multiple-input multiple-output system under the condition of colluding eavesdropping by multiple passive eavesdroppers.To address the problem of li...
关键词：CELL-FREE Colluding eavesdropping Limited pilot resources Access point selection Security rate 
Impact of non-ideal UE hardware on cell-free massive MIMO network with centralized operation
《Science China(Information Sciences)》2024年第4期251-267,共17页Ning LI Pingzhi FAN 
supported by National Natural Science Foundation of China(Grant No.62020106001);111 Project(Grant No.111-2-14)。
This paper investigates the impact of non-ideal user equipment(UE)hardware on a cell-free(CF)massive MIMO(mMIMO)network with centralized operation under spatially correlated channels.The minimum mean-squared error(MMS...
关键词：cell-free massive MIMO centralized operation spatially correlated channels hardware impairments channel estimation uplink spectral efficiency optimal receive combining pilot length design fractional power control 
RIS-Assisted Cell-Free MIMO: A Survey
《ZTE Communications》2024年第1期77-86,共10页ZHAO Yaqiong KE Hongqin XU Wei YE Xinquan CHEN Yijian 
supported in part by ZTE Industry-University-Institute Co⁃operation Funds.
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 ...
关键词：mmWave beyond 5G(B5G) Internet of Everything(IoE) cell-free MIMO RIS unmanned aerial vehicle(UAV) physical layer security(PLS) wireless energy transfer(WET) 
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