Results 201 to 210 of about 13,357 (238)
Some of the next articles are maybe not open access.
Power Minimization for Cell-Free Massive MIMO
2019 IEEE International Conference on Consumer Electronics - Taiwan (ICCE-TW), 2019In this paper, we investigate the total power minimization problem for the downlink cell-free massive multiple- input multiple-output (mMIMO) system, subjecting to the users' quality-of-service (QoS) constraint. Specifically, the total power consists of circuit power, data transmission power, and backhaul power.
Yao Zhang 0016 +4 more
openaire +1 more source
IEEE Transactions on Vehicular Technology
Stacked intelligent metasurfaces (SIM) is considered a revolutionary technology that enables powerful signal processing directly in the electromagnetic (EM) wave domain and has significant energy-saving advantages.
Yating Hu +6 more
semanticscholar +1 more source
Stacked intelligent metasurfaces (SIM) is considered a revolutionary technology that enables powerful signal processing directly in the electromagnetic (EM) wave domain and has significant energy-saving advantages.
Yating Hu +6 more
semanticscholar +1 more source
IEEE Transactions on Wireless Communications, 2020
We study uplink of cell-free massive multiple-input multiple-output system with limited capacity fronthaul link connecting each access point (AP) to a central processing unit (CPU), under hardware impairments at user equipments and APs.
H. Masoumi, M. Emadi
semanticscholar +1 more source
We study uplink of cell-free massive multiple-input multiple-output system with limited capacity fronthaul link connecting each access point (AP) to a central processing unit (CPU), under hardware impairments at user equipments and APs.
H. Masoumi, M. Emadi
semanticscholar +1 more source
Enhancing Uplink Performance for Cell-Free Massive MIMO With Low-Resolution ADCs by RSMA
IEEE Journal on Selected Areas in CommunicationsThis paper explores the potential of employing rate-splitting multiple access to enhance the achievable rate and energy efficiency (EE) of an uplink cell-free massive multiple-input multiple-output (MIMO) system, where the access points (APs) are ...
Yao Zhang +5 more
semanticscholar +1 more source
From Cells to Freedom: 6G's Evolutionary Shift With Cell-Free Massive MIMO
IEEE Transactions on Mobile ComputingCell-free massive MIMO (CF-mMIMO) is emerging as a technological pillar for future sixth generation (6G) mobile networks, promising consistently high spectral and energy efficiencies across the coverage area.
G. Femenias, F. Riera-Palou
semanticscholar +1 more source
Cell-Free Massive MIMO Symbiotic Radio for IoT: RIS or BD?
IEEE Transactions on Wireless CommunicationsCell-free massive multiple-input multiple-output symbiotic radio (CF-mMIMO-SR) is a promising technology to address the requirements of high-rate and spectrum-efficient communication for the Internet of Things (IoT). However, in the conventional CF-mMIMO-
Feiyang Li +5 more
semanticscholar +1 more source
Cell-Free Massive MIMO SWIPT With Beyond Diagonal Reconfigurable Intelligent Surfaces
IEEE Transactions on CommunicationsWe investigate the integration of beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) into cell-free massive multiple-input multiple-output (CF-mMIMO) systems to enhance simultaneous wireless information and power transfer (SWIPT).
Thien Duc Hua +3 more
semanticscholar +1 more source
Robust Resource Allocation in Cell-Free Massive MIMO Systems
IEEE Transactions on CommunicationsCell-free networks outperform cellular networks in many aspects, yet their efficiency is affected by imperfect channel state information (CSI). In order to address this issue, this work presents a robust resource allocation framework designed for the ...
S. Mashdour +5 more
semanticscholar +1 more source
Cell-Free Massive MIMO with Underlay Spectrum-Sharing
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019In this paper, the coexistence of cell-free massive multiple-input multiple-output (MIMO) and underlay spectrum-sharing is investigated. Thereby, the fundamental performance limits are established to characterize the feasibility of this coexistence. A set of spatially-distributed secondary access points (S-APs), which are underlaid in a primary cell ...
Diluka Loku Galappaththige +1 more
openaire +1 more source
Physical Layer Security in Cell- Free Massive MIMO
2018 IEEE Global Communications Conference (GLOBECOM), 2018The achievable secrecy rates for a cell-free massive multiple-input multiple-output (MIMO) in the presence of a single-antenna active eavesdropper are derived and compared with that of co-located massive MIMO. The active eavesdropper contaminates the uplink channel estimates at the access points (APs), and the downlink precoders at the APs are ...
Santosh Timilsina +2 more
openaire +1 more source