Results 21 to 30 of about 8,525,169 (240)

FDD-Based Cell-Free Massive MIMO Systems

open access: yes2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2018
Cell-free massive MIMO system is a promising technology of 5G wireless communications that provide a usercentric coverage to the user by the basestation cooperation.
Kim, Seungnyun   +3 more
core   +2 more sources

Cell-Free Massive MIMO With Multiple Active Eavesdroppers

open access: yesIEEE Open Journal of the Communications Society
This paper investigates the secrecy performance of cell-free massive MIMO (CF-mMIMO) systems in the presence of active spoofing attacks by multiple eavesdroppers (Eves). Each Eve conducts a spoofing attack on a different legitimate user during the uplink
Yasseen Sadoon Atiya   +3 more
doaj   +3 more sources

Reconfigurable Intelligent Surface-Assisted Cell-Free Massive MIMO Systems Over Spatially-Correlated Channels [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2021
Cell-Free Massive multiple-input multiple-output (MIMO) and reconfigurable intelligent surface (RIS) are two promising technologies for application to beyond-5G networks.
C. Trinh   +4 more
semanticscholar   +1 more source

Multi-Static Target Detection and Power Allocation for Integrated Sensing and Communication in Cell-Free Massive MIMO [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2023
This paper studies an integrated sensing and communication (ISAC) system within a centralized cell-free massive MIMO (multiple-input multiple-output) network for target detection.
Z. Behdad   +4 more
semanticscholar   +1 more source

Impact of Channel Aging on Cell-Free Massive MIMO Over Spatially Correlated Channels [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2021
In this paper, we investigate the impact of channel aging on the performance of cell-free (CF) massive multiple-input multiple-output (MIMO) systems with both spatial correlation and pilot contamination.
Jia-Kang Zheng   +3 more
semanticscholar   +1 more source

On the effect of shadowing correlation and pilot assignment on hybrid precoding performance for cell-free mmWave massive MIMO UDN system

open access: yesICT Express, 2021
One of promising transmission technologies for beyond-5G wireless communication is cell-free massive MIMO where all the access nodes (ANs) cooperate to coherently serve all the user equipments (UEs).
Seung-Eun Hong
doaj   +1 more source

Cell-Free Massive MIMO in O-RAN: Energy-Aware Joint Orchestration of Cloud, Fronthaul, and Radio Resources [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2023
For the energy-efficient deployment of cell-free massive MIMO functionality in a practical wireless network, the end-to-end (from radio site to the cloud) energy-aware operation is essential. In line with the cloudification and virtualization in the open
Özlem Tuğfe Demir   +3 more
semanticscholar   +1 more source

Cell-Free Massive MIMO with Energy-Efficient Downlink Operation in Industrial IoT

open access: yesMathematics, 2022
Cell-free massive Multi-input Multi-output (MIMO) can offer higher spectral efficiency compared with cellular massive MIMO by providing services to users through the collaboration of distributed APs, and cell-free massive MIMO systems with distributed ...
Xiaomin Chen   +4 more
doaj   +1 more source

Trajectory Optimization and Power Allocation Algorithm in MBS-Assisted Cell-Free Massive MIMO Systems

open access: yesIEEE Access, 2021
As the mobile networks become even denser and the traffic demand is increasing drastically, it is becoming more heterogeneous. Recently, it is intensive to investigate the Cell-Free Massive multiple-input multiple-output Massive (MIMO) system, where a ...
Jue An, Feng Zhao
doaj   +1 more source

A Study on the Robustness of a DNN Under Scenario Shifts for Power Control in Cell-Free Massive MIMO. [PDF]

open access: yesSensors (Basel)
The emergence of 6G wireless networks presents new challenges, for which cell-free massive MIMO combined with machine learning (ML) offers a promising solution.
García-Barrios G   +2 more
europepmc   +2 more sources

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