Results 51 to 60 of about 26,712 (151)
On the spectral distribution of kinetic energy in large-scale atmospheric flow [PDF]
Nonlinear Processes in Geophysics, 1998 A one-dimensional form of the equation of motion with forcing and dissipation is formulated in the spectral domain and used to make long term integrations from which the spectral distribution of the kinetic energy is determined The forcing in the wave ...
A. Wiin-Nielsen
doaj
On the power domination number of the Cartesian product of graphs
AKCE International Journal of Graphs and Combinatorics, 2019 We give a brief survey about the existing results on the power domination of the Cartesian product of graphs, and improve two of the results by determining the exact power domination numbers of two families of graphs, namely, the cylinder Pn□Cmand the ...
K.M. Koh, K.W. Soh
doaj +1 more source
Asymptotic RZF cooperative beamforming algorithm based on energy efficiency
Tongxin xuebao, 2019 A low complexity asymptotic regularized zero forcing cooperative beamforming algorithm based on energy efficiency in heterogeneous massive MIMO system was proposed,aiming at the problem that the current multi-flow regularization zero forcing beamforming ...
Yinghui ZHANG +3 more
doaj +2 more sources
On the -forcing number: computational approach and exact values
Journal of Physics: ComplexityZero forcing is a graph coloring process that is used to model spreading phenomena in real-world scenarios. It can also be viewed as a single-player combinatorial game on a graph, where the player’s goal is to select a subset of vertices of minimum ...
Aida Abiad, Maryam Moghaddas
doaj +1 more source
A Hybrid Approach to Spatial Multiplexing in Multiuser MIMO Downlinks
EURASIP Journal on Wireless Communications and Networking, 2004 In the downlink of a multiuser multiple-input multiple-output (MIMO) communication system, simultaneous transmission to several users requires joint optimization of the transmitted signals. Allowing all users to have multiple antennas adds an additional
Spencer Quentin H., Swindlehurst A. Lee
doaj +2 more sources
Geosphere: An Exact Depth-First Sphere Decoder Architecture Scalable to Very Dense Constellations
IEEE Access, 2017 This paper presents the algorithmic design, experimental evaluation, and very large scale of integration (VLSI) implementation of Geosphere, a depth-first sphere decoder able to provide the exact maximum-likelihood solution in dense (e.g., 64) and very ...
Georgios Georgis +2 more
doaj +1 more source
Zero Forcing Number of Random Regular Graphs
, 2018 The zero forcing process is an iterative graph colouring process in which at each time step a coloured vertex with a single uncoloured neighbour can force this neighbour to become coloured. A zero forcing set of a graph is an initial set of coloured vertices that can eventually force the entire graph to be coloured.
Bal, Deepak +4 more
openaire +2 more sources
EURASIP Journal on Wireless Communications and Networking, 2005 The advances in programmable and reconfigurable radios have rendered feasible transmitter optimization schemes that can greatly improve the performance of multiple-antenna multiuser systems.
Samardzija Dragan +2 more
doaj +2 more sources
Vertex sequences in graphs [PDF]
Discrete Mathematics Letters, 2021 Teresa W. Haynes, Stephen T. Hedetniemi
doaj +1 more source
Quantization-Error Threshold-Based User Admission for Limited-Feedback MU-MIMO Downlink
MathematicsFuture wireless systems such as 5G-Advanced and 6G are expected to rely increasingly on multi-user MIMO and distributed multi-antenna transmission, where accurate channel direction information (CDI) is essential for interference management.
Seojun Kim, Gayoung Keum, Hyukmin Son
doaj +1 more source