Results 281 to 290 of about 3,638,652 (319)

Improved Computational Approaches and Heuristics for Zero Forcing

INFORMS journal on computing, 2021
Zero forcing is a graph coloring process based on the following color change rule: all vertices of a graph [Formula: see text] are initially colored either blue or white; in each timestep, a white vertex turns blue if it is the only white neighbor of ...
Boris Brimkov, Derek Mikesell, Illya V. Hicks   +2 more
semanticscholar   +1 more source

Blocking zero forcing processes in Cartesian products of graphs

Discrete Applied Mathematics, 2020
In a zero forcing process, an initial vertex coloring of a graph is updated iteratively according to the following conversion rule: an uncolored vertex becomes colored if it is the only uncolored neighbor of some colored vertex.
N. Karst, X. Shen, Denise Sakai Troxell, MinhKhang Vu   +3 more
semanticscholar   +1 more source

On Extremal Graphs for Zero Forcing Number

Graphs and Combinatorics, 2022
For a graph \(G\) with \(S\subseteq V(G)\), \(S\) is a zero forcing set of \(G\) if iteratively adding vertices to \(S\) from \(V(G)\setminus S\) that are the unique neighbor in \(V(G)\setminus S\) of some vertex in \(S\), results in the entire \(V(G)\) of \(G\).
Yi-Ping Liang, Jianxi Li, Shou-Jun Xu
openaire   +1 more source

Robust transmit zero-forcing filters

ITG Workshop on Smart Antennas (IEEE Cat. No.04EX802), 2005
We present linear and nonlinear robust transmit zero-forcing filters for the downlink of multiuser multiple-input single-output (MU-MISO) time-division-duplex (TDD) systems which are robust with respect to errors in the channel state information (CSI) arising from channel estimation and time lags in mobile communications.
R. Hunger, F.A. Dietrich, M. Joham, W. Utschick   +3 more
openaire   +1 more source

Leaky Zero-Forcing Adaptive Equalization

IEEE Signal Processing Letters, 2004
Zero-forcing equalizer adaptation schemes are attractive because of their simplicity. We study their steady-state solution, and find that it is more poorly conditioned than that of least mean-square adaptation schemes. A simple yet effective solution to this problem, based on tap leakage, is proposed, analyzed, and exemplified for an idealized digital ...
Bergmans, J.W.M., Lin, M.Y.
openaire   +1 more source

Wireless Multicasting with Zero-Forcing Filtering

2021 International Conference on Automation, Control and Mechatronics for Industry 4.0 (ACMI), 2021
The Thesis contains a multicasting synopsis in wireless multicasting system through Rayleigh fading channel, where a source transmitter interfaces with multiple users where multiple eavesdroppers are present, multiple antennas are attached on both the receivers of users and eavesdroppers. All the eavesdroppers are independent mutually.
Shamima Yasmin Sejuti, Fahmida Hossain, Rezwana Sultana, Md. Arifuzzaman, Tamim Hossain, Mahmudul Hasan Rifat   +5 more
openaire   +1 more source

Fully Decentralized Approximate Zero-Forcing Precoding for Massive MIMO Systems

IEEE Wireless Communications Letters, 2019
We analyze the downlink of a massive multiuser multiple input, multiple output (MIMO) system where antenna units at the base station are connected in a daisy chain without a central processing unit and only possess local channel knowledge. For this setup,
Muris Sarajlić, F. Rusek, Jesús Rodríguez Sánchez, Liang Liu, O. Edfors   +4 more
semanticscholar   +1 more source

Asynchronous zero-forcing adaptive equalization

European Transactions on Telecommunications, 2005
Digital data receivers often operate at a fixed sampling rate 1/Ts that is asynchronous to the baud rate 1/T. A digital equalizer that processes the incoming signal will also be asynchronous, and its adaptation is commonly based on extensions of the LMS algorithm.
Bergmans, J.W.M., Pozidis, H., Lin, M.Y.
openaire   +2 more sources

Randomized Zero Forcing

arXiv.org
We introduce randomized zero forcing (RZF), a stochastic color-change process on directed graphs in which a white vertex turns blue with probability equal to the fraction of its incoming neighbors that are blue.
Jesse Geneson, Illya V. Hicks, Noah Lichtenberg, Alvin Moon, Nicolas Robles   +4 more
semanticscholar   +1 more source

Adaptive zero-forcing blind equalisers

IEE Proceedings - Communications, 2001
Several adaptive blind equalisers, based on the zero-forcing (ZF) cost function, are presented. In order to estimate the mean square error (MSE) learning curve of a ZF FIR-type blind equaliser, a recursive method to predict the MSE trajectory is introduced.
openaire   +1 more source