Results 21 to 30 of about 789 (166)
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
Clustered Cell-Free Massive MIMO [PDF]
2018 IEEE Globecom Workshops (GC Wkshps), 2018 This paper introduces a novel technique, clustered cell-free massive-MIMO (C2F-M-MIMO), that generalizes the recently proposed cell-free massive MIMO (CF-M-MIMO) concept by optimizing the connectivity pattern among access points (APs) and mobile stations (MSs).
Riera-Palou, Felip +3 more
openaire +1 more source
Cell-Free Massive MIMO Surveillance Systems
GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023 Wireless surveillance, in which untrusted communications links are proactively monitored by legitimate agencies, has started to garner a lot of interest for enhancing the national security. In this paper, we propose a new cell-free massive multiple-input multiple-output (CF-mMIMO) wireless surveillance system, where a large number of distributed multi ...
Zahra Mobini +3 more
openaire +3 more sources
IET Networks, EarlyView., 2023 We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh +4 more
wiley +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
Pilot Decontamination Processing in Cell-Free Massive MIMO [PDF]
IEEE Communications Letters, 2021 5 pages, 3 figures, to appear IEEE Communications ...
Alberto Álvarez Polegre +2 more
openaire +4 more sources
IEEE Access, 2021 A cell-free massive multiple-input multiple-output (MIMO) network-assisted full-duplex (NAFD) system has been proposed to satisfy the exploding demand of higher data transmission speed and more efficient communication.
Yanfeng Hu +3 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
A GNN Approach for Cell-Free Massive MIMO
GLOBECOM 2022 - 2022 IEEE Global Communications Conference, 2022 Beyond 5G wireless technology Cell-Free Massive MIMO (CFmMIMO) downlink relies on carefully designed precoders and power control to attain uniformly high rate coverage. Many such power control problems can be calculated via second order cone programming (SOCP). In practice, several order of magnitude faster numerical procedure is required because power
Lou Salaün +3 more
openaire +2 more sources
Spectral Efficiency Improvement and Power Control Optimization of Massive MIMO Networks
IEEE Access, 2021 Higher requirements must be put forward about wireless signal transmission in harsh environments. Energy loss mitigation, channel estimation, noise interference reduction demands high quality of service in wireless communication.
Xiu Zhang, Hao Qi, Xin Zhang, Liang Han
doaj +1 more source