Results 31 to 40 of about 43,825 (303)
A Light Signaling Approach to Node Grouping for Massive MIMO IoT Networks
Computers, 2022 Massive MIMO is one of the leading technologies for connecting very large numbers of energy-constrained nodes, as it offers both extensive spatial multiplexing and large array gain.
Emma Fitzgerald +5 more
doaj +1 more source
Dynamic Beam Hopping Algorithm for LEO Satellite Systems Based on User Grouping
天地一体化信息网络, 2023 In a satellite communication system deployed with massive MIMO, when the number of users far exceeds the number of beams of the satellite, it is still difficult to satisfy the delay requirements of the satellite communication system even if the number of
Qing SHU +5 more
doaj +2 more sources
IEEE Access, 2022 Non-Orthogonal Multiple Access (NOMA) is one of the promising technologies for wireless communication networks. Although NOMA was originally proposed in cellular networks, due to its strengths, it can also be used in other networks, such as wireless ...
Nasrin Gholami +3 more
doaj +1 more source
Improving User Comprehension of Euler Diagrams [PDF]
, 2013 The graphical choices made when laying out Euler diagrams impact upon both aesthetic quality and comprehensiveness. Graphical choices include the shape, size and colour of closed curves which are commonly described as retinal variables to which we are ...
Howse, John +9 more
core +1 more source
Space Division Multiple Access With Distributed User Grouping for Multi-User MIMO-VLC Systems
IEEE Open Journal of the Communications Society, 2020 To support multiple users in an indoor multiple-input multiple-output visible light communication (MIMO-VLC) system adopting spatial multiplexing, orthogonal frequency division multiple access (OFDMA) is usually adopted, where the overall modulation ...
Chen Chen +4 more
doaj +1 more source
Spectral Efficiency Optimization of Uplink Millimeter Wave MIMO-NOMA Systems
Sensors, 2022 In this paper, we considered uplink communication, focusing on the improvement of spectral efficiency (SE) for millimeter wave (mmWave) multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) systems.
Yinhao Zhang +5 more
doaj +1 more source
Adaptive User Grouping Based on EVM Prediction for Efficient & Robust Massive MIMO in TDD
IEEE Access, 2019 Massive multiple-input, multiple-output (Ma-MIMO) offers significant capacity improvements for sub-6GHz wireless access. Evaluating the practicalities for real-world deployments and identifying solutions is the next critical step in the roll-out of this ...
Wael Boukley Hasan +4 more
doaj +1 more source
Exploration of User Groups in VEXUS [PDF]
2018 IEEE 34th International Conference on Data Engineering (ICDE), 2018 We introduce VEXUS, an interactive visualization framework for exploring user data to fulfill tasks such as finding a set of experts, forming discussion groups and analyzing collective behaviors. User data is characterized by a combination of demographics like age and occupation, and actions such as rating a movie, writing a paper, following a medical ...
Sihem Amer-Yahia +4 more
openaire +2 more sources
User Grouping with Load Balance in FDD Massive MIMO Systems
, 2017 In this paper, we consider a multiple dimension resources allocation problem, including user grouping in the spatial domain and resource blocks (RBs) allocation in the time-frequency domain, in a frequency-division-duplexing (FDD) massive MIMO system. We
Xun Li +11 more
core +1 more source
Dynamic User Grouping and Joint Resource Allocation with Multi-Cell Cooperation for Uplink Virtual MIMO Systems [PDF]
, 2017 This paper proposes a novel joint resource allocation algorithm combining dynamic user grouping, multi-cell cooperation and resource block (RB) allocation for single carrier-frequency division multiple access (SC-FDMA) uplink in multicell virtual MIMO ...
Li, Wenna +7 more
core +1 more source