Results 31 to 40 of about 1,075,663 (288)

Maximum Oriented Forcing Number for Complete Graphs

open access: yesTheory and Applications of Graphs, 2019
The \emph{maximum oriented $k$-forcing number} of a simple graph $G$, written $\MOF_k(G)$, is the maximum \emph{directed $k$-forcing number} among all orientations of $G$.
Yair Caro, Ryan Pepper
doaj   +1 more source

On the zero forcing number of generalized Sierpinski graphs [PDF]

open access: yesTransactions on Combinatorics, 2019
In this article we study the Zero forcing number of Generalized Sierpi\'{n}ski graphs $S(G,t)$‎. ‎More precisely‎, ‎we obtain a general lower bound on the Zero forcing number of $S(G,t)$ and we show that this bound is tight‎.
Ebrahim Vatandoost   +2 more
doaj   +1 more source

Machine Learning-Based Beamforming in K-User MISO Interference Channels

open access: yesIEEE Access, 2021
In this paper, we consider a K-user multiple-input and single-output interference channel and propose a machine learning-based beamforming design. To circumvent the difficulties of beamforming design in interference channels, we consider a beamforming ...
Hyung Jun Kwon, Jung Hoon Lee, Wan Choi
doaj   +1 more source

Bounds for the Zero Forcing Number of Graphs with Large Girth

open access: yesTheory and Applications of Graphs, 2015
The zero-forcing number, Z(G) is an upper bound for the maximum nullity of all symmetric matrices with a sparsity pattern described by the graph. A simple lower bound is δ ≤ Z(G) where δ is the minimum degree.
Randy Davila, Franklin Kenter
doaj   +1 more source

The Bipartite Zero Forcing Set for a Full Sign Pattern Matrix

open access: yesMathematics, 2020
For an m × n sign pattern P, we define a signed bipartite graph B ( U , V ) with one set of vertices U = { 1 , 2 , … , m } based on rows of P and the other set of vertices V = { 1 ′ , 2 ′ , … ,
Gu-Fang Mou   +2 more
doaj   +1 more source

Signed zero forcing number and controllability for a networks system with a directed hypercube [PDF]

open access: yesMATEC Web of Conferences, 2022
The controllability for complex network system is to find the minimum number of leaders for the network system to achieve effective control of the global networks.
Mou Gufang, Zhang Qiuyan
doaj   +1 more source

On the Design of Coherent Zero-Forcing Receiver for the Flat Fading MIMO Multiple-Access Channels [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2019
Background and Objectives: Design of low-complexity receiver for space-time block coded (STBC) transmission over multiple-input multiple-output (MIMO) multiple-access channels has been subject of interest over the years.
M. Sheikh-Hosseini
doaj   +1 more source

Fractional weighted ZF equalizer: A novel approach for channel equalization in MIMO-OFDM system under impulse noise environment

open access: yesCommunications in Science and Technology, 2021
Impulse noise is the major factor degrading the performance of the wireless system, imposing the need for the impulse noise mitigation strategy. Mainly, in the multiple-input multiple-output (MIMO) and orthogonal frequency-division multiplexing (OFDM ...
S. P. Girija, Rameshwar Rao
doaj   +1 more source

A lower bound on the zero forcing number [PDF]

open access: yesDiscrete Applied Mathematics, 2018
In this note, we study a dynamic vertex coloring for a graph $G$. In particular, one starts with a certain set of vertices black, and all other vertices white. Then, at each time step, a black vertex with exactly one white neighbor forces its white neighbor to become black.
Randy Davila   +2 more
openaire   +4 more sources

Maximum nullity and zero forcing of circulant graphs

open access: yesSpecial Matrices, 2020
The zero forcing number of a graph has been applied to communication complexity, electrical power grid monitoring, and some inverse eigenvalue problems.
Duong Linh   +4 more
doaj   +1 more source

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