Results 191 to 200 of about 8,525,169 (240)

Activity Detection and Channel Estimation Based on Correlated Hybrid Message Passing for Grant-Free Massive Random Access. [PDF]

Entropy (Basel)
Liu X, Gong X, Fu X.
europepmc   +1 more source

Finite-blocklength information theory. [PDF]

Fundam Res
Gao J, Chen S, Wu Y, Liu L, Caire G, Poor HV, Zhang W.   +6 more
europepmc   +1 more source

A Broader Survey on 6G Radio Resource Management. [PDF]

Sensors (Basel)
de Faria AJ, Brito JMC, Spadoti DH, Borges RM.   +3 more
europepmc   +1 more source

Scalable Cell-Free Massive MIMO Systems [PDF]

IEEE Transactions on Communications, 2020
Imagine a coverage area with many wireless access points that cooperate to jointly serve the users, instead of creating autonomous cells. Such a cell-free network operation can potentially resolve many of the interference issues that appear in current ...
Luca Sanguinetti, Emil Björnson
exaly   +5 more sources

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Cell-Free Massive MIMO: User-Centric Approach

IEEE Wireless Communications Letters, 2017
Recently, the so-called cell-free (CF) massive MIMO architecture has been introduced, wherein a very large number of distributed access points simultaneously and jointly serve a much smaller number of mobile stations. This letter introduces a user-centric (UC) virtual cell approach to CF massive MIMO, wherein each user is served only by a limited ...
Carmen D'Andrea, Stefano Buzzi
exaly   +4 more sources

Cell-Free Massive MIMO: A Survey

IEEE Communications Surveys & Tutorials, 2022
Towards a fully connected intelligent digital world, 5G and beyond networks experience a new era of Internet of intelligence with connected people and things.
Salah Elhoushy, Mohamed Ibrahim, W. Hamouda   +2 more
semanticscholar   +3 more sources

Cell-Free Massive MIMO Versus Small Cells [PDF]

IEEE Transactions on Wireless Communications, 2017
A Cell-Free Massive MIMO (multiple-input multiple-output) system comprises a very large number of distributed access points (APs), which simultaneously serve a much smaller number of users over the same time/frequency resources based on directly measured
Hien Ngo, Alexei Ashikhmin
exaly   +7 more sources

Structured Massive Access for Scalable Cell-Free Massive MIMO Systems

IEEE Journal on Selected Areas in Communications, 2021
How to meet the demand for increasing number of users, higher data rates, and stringent quality-of-service (QoS) in the beyond fifth-generation (B5G) networks? Cell-free massive multiple-input multiple-output (MIMO) is considered as a promising solution,
Bo Ai, Jiayi Zhang, Emil Björnson
exaly   +2 more sources

Clustering-Based Activity Detection Algorithms for Grant-Free Random Access in Cell-Free Massive MIMO

IEEE Transactions on Communications, 2021
Future wireless networks need to support massive machine type communication (mMTC) where a massive number of devices accesses the network and massive MIMO is a promising enabling technology. Massive access schemes have been studied for co-located massive
Unnikrishnan Kunnath Ganesan, Emil Björnson, Erik G. Larsson   +2 more
exaly   +2 more sources

Modified Conjugate Beamforming for Cell-Free Massive MIMO [PDF]

IEEE Wireless Communications Letters, 2019
The work of A. Lozano was supported in part by MINECO/FEDER, UE under Project TEC2015-66228-P, and in part by the European Research Council through H2020 Framework Programme/ERC under Grant 694974.
Aliazam Abbasfar, Masoud Attarifar, Angel Lozano   +2 more
exaly   +4 more sources