Results 11 to 20 of about 131,680 (187)

Wide Field of View Retrodirective Millimeter Wave Antenna Array With Pulse Modulation and Orthogonal Polarization States

open access: yesIEEE Access, 2020
This work presents novel techniques to realize a retrodirective millimeter wave antenna array with wide field of view. High gain arrays in phase conjugate configuration are used in combination with orthogonal polarization states and a novel pulse ...
Ahmed Bilal Numan   +2 more
doaj   +1 more source

On Orthogonal Arrays

open access: yesThe Annals of Mathematical Statistics, 1966
It was shown in [11] that one can construct orthogonal arrays $(\lambda 2^3, k + 1, 2, 3)$ from arrays $(\lambda 2^2, k, 2, 2)$ with the maximum number of constraints $k + 1$ provided that $k$ is the maximum number of constraints for the arrays of strength two. This result is generalized here to construction of arrays $(\lambda 2^{t + 1}, k + 1, 2, t +
Seiden, Esther, Zemach, Rita
openaire   +2 more sources

Difference Covering Arrays and Pseudo-Orthogonal Latin Squares [PDF]

open access: yes, 2015
Difference arrays are used in applications such as software testing, authentication codes and data compression. Pseudo-orthogonal Latin squares are used in experimental designs.
Demirkale, Fatih   +4 more
core   +2 more sources

3-Uniform states and orthogonal arrays

open access: yesResults in Physics, 2016
We propose a criterion for the k-uniform state via local unitary transformation invariant and find for what N there are 3-uniform states of N-qubits.
Xin-wei Zha, Irfan Ahmed, Yanpeng Zhang
doaj   +1 more source

Binary (k, k)-Designs

open access: yesMathematics, 2020
We introduce and investigate binary (k,k)-designs, a special case of T-designs. Our combinatorial interpretation relates (k,k)-designs to the binary orthogonal arrays.
Todorka Alexandrova   +2 more
doaj   +1 more source

Orthogonal Printed Microstrip Antenna Arrays for 5G Millimeter-Wave Applications

open access: yesMicromachines, 2021
This article presents the design of a planar MIMO (Multiple Inputs Multiple Outputs) antenna comprised of two sets orthogonally placed 1 × 12 linear antenna arrays for 5G millimeter wave (mmWave) applications.
Muhammad M. Hossain   +2 more
doaj   +1 more source

Generalized resolution for orthogonal arrays [PDF]

open access: yes, 2014
The generalized word length pattern of an orthogonal array allows a ranking of orthogonal arrays in terms of the generalized minimum aberration criterion (Xu and Wu [Ann. Statist. 29 (2001) 1066-1077]).
Grömping, Ulrike, Xu, Hongquan
core   +1 more source

DoE.MIParray: An R Package for Algorithmic Creation of Orthogonal Arrays

open access: yesJournal of Open Research Software, 2020
The R package DoE.MIParray uses mixed integer optimization for creating well-balanced arrays for experimental designs. Its use requires availability of at least one of the commercial optimizers Gurobi or Mosek.
Ulrike Grömping
doaj   +1 more source

Derandomizing Compressed Sensing With Combinatorial Design

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
Compressed sensing is the art of effectively reconstructing structured n-dimensional vectors from substantially fewer measurements than naively anticipated. A plethora of analytical reconstruction guarantees support this credo.
Peter Jung   +2 more
doaj   +1 more source

Mixture Designs Generated by Orthogonal Arrays Developed Using Difference Schemes [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2020
This paper presents an algorithm for constructing mixture designs based on orthogonal arrays developed using difference schemes. The algorithm can also be applied to constrained mixture experiments.
Poonam Singh, Vandana Sarin, Neha Midha
doaj   +1 more source

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