Results 11 to 20 of about 10,463 (206)
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 ...
Ashikhmin, Alexei +4 more
core +7 more sources
Engineering ReportsThe prevailing research on cell‐free massive multiple‐input multiple‐output (MIMO) systems posits that, due to channel reciprocity and channel hardening properties, user equipment (UEs) can decode downlink data solely based on uplink statistical channel ...
Jiarui Li +5 more
doaj +2 more sources
Cell-Free Massive MIMO With Multiple Active Eavesdroppers
IEEE Open Journal of the Communications SocietyThis 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 +4 more sources
Subgroup-Centric Multicast Cell-Free Massive MIMO
IEEE Open Journal of the Communications SocietyCell-free massive multiple-input multiple-output (CF-mMIMO) is an emerging technology for beyond fifth-generation (5G) systems aimed at enhancing the energy and spectral efficiencies of future mobile networks while providing nearly uniform quality of ...
Alejandro De La Fuente +3 more
doaj +4 more sources
Pilot Decontamination Processing in Cell-Free Massive MIMO [PDF]
IEEE Communications Letters, 2021 5 pages, 3 figures, to appear IEEE Communications ...
Alberto Alvarez Polegre +2 more
openaire +3 more sources
IEEE 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
Compute-and-forward transmission scheme in cell-free massive MIMO systems
ICT Express, 2023 Cell-free massive multi-input-multi-output (MIMO) systems comprise a large number of distributed access points (APs) to serve a small number of user equipments (UEs). In this paper, compute-and-forward (CF) is investigated for uplink in cell-free massive
Hua Jiang, Linghong Kong, Sidan Du
doaj +1 more source
Telecom, 2022 In this paper, we propose a hybrid beamforming architecture with constant phase shifters (CPSs) for uplink cell-free millimetre-wave (mm-Wave) massive multiple-input multiple-output (MIMO) systems based on exploiting antenna selection to reduce power ...
Abdulrahman Al Ayidh +4 more
doaj +1 more source
Cell-Free Massive MIMO for UAV Communications [PDF]
2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019 Submitted to 2019 ICC Workshop on "Integrating UAVs into 5G and Beyond"
D'Andrea C. +4 more
openaire +2 more sources
Cell-Free Massive MIMO Meets OTFS Modulation
IEEE Transactions on Communications, 2022 We provide the first-ever performance evaluation of orthogonal time frequency space (OTFS) modulation in cell-free massive multiple-input multiple-output (MIMO) systems. To investigate trade-off between performance and overhead, we apply embedded pilot-aided and superimposed pilot-based channel estimation methods.
Mohammadali Mohammadi +2 more
openaire +4 more sources