Results 41 to 50 of about 1,017,243 (285)

A Modified Grouped Linear ZF Algorithm Using Different Modulation Schemes for MIMO Systems [PDF]

open access: yesEngineering and Technology Journal, 2012
A new algorithm for a group iterative linear Zero-Forcing (ZF) receiver formultiple-input multiple-output (MIMO) systems is proposed in this paper. Theproposed algorithm merges between the group linear ZF receiver and V-Blastalgorithms, where the signals
Ahmed Gh. Wadday   +2 more
doaj   +1 more source

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

Adaptive Modulation for Orthogonal Frequency Division Multiplexing [PDF]

open access: yesEngineering and Technology Journal, 2012
Orthogonal frequency division multiplexing (OFDM) is one of the promising technologies to improve the spectral efficiency, enhance system capacity and mitigate inter-symbol interference in the wireless communication system.
Maher K. Mahmood, Abbas Salman Hameed
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

Variations of zero forcing and power domination [PDF]

open access: yes, 2022
Zero forcing is a propagation process on a graph that turns white vertices into blue vertices. In this process, an initial set of vertices in a graph $G$ are chosen to be blue and all others are colored white, then a color-change rule is iteratively ...
Alameda, Joseph
core  

Dynamic approach to k-forcing

open access: yesTheory and Applications of Graphs, 2015
The k-forcing number of a graph is a generalization of the zero forcing number. In this note, we give a greedy algorithm to approximate the k-forcing number of a graph. Using this dynamic approach, we give corollaries which improve upon two theorems from
Yair Caro, Ryan Pepper
doaj   +1 more source

0034 | Zero Forcing Number in Neutrosophic Graphs

open access: yes, 2022
In this book, some notions are introduced about “Zero Forcing Number in Neutrosophic Graphs.” Three chapters are devised as “Common Notions”, “Modified Notions” and “Extended Notions”. Three manuscripts are cited as the references of these chapters which
Henry Garrett
core   +1 more source

Failed Zero Forcing Numbers of Trees and Circulant Graphs

open access: yesTheory and Applications of Graphs
Given a graph $G$, the zero forcing number of $G$, $Z(G)$, is the smallest cardinality of any set $S$ of vertices on which repeated applications of the forcing rule (described below) results in all vertices being in $S$.
Luis Gomez   +4 more
doaj   +1 more source

Beamforming design of sum rate optimization for MU-MISO scenario

open access: yes上海师范大学学报. 自然科学版, 2015
This paper investigates the beamforming design based on perfect channel state information (CSI) in a multi-user downlink network.The base station (BS) is equipped with multiple antennas while each user is equipped with one antenna.The BS will communicate
ZHAO Pu, YU Hui, LUO Hanwen
doaj   +1 more source

Rate Splitting With Finite Constellations: The Benefits of Interference Exploitation vs Suppression

open access: yesIEEE Open Journal of the Communications Society, 2021
Rate-Splitting (RS) has been shown recently to be a powerful approach for the design of non-orthogonal transmission, multiple access, and interference management strategies in multi-user multi-antenna systems.
Abdelhamid Salem   +2 more
doaj   +1 more source

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