Results 11 to 20 of about 11,492 (243)

On the existence of nested orthogonal arrays

open access: yesDiscrete Mathematics, 2008
A nested orthogonal array is an OA(N,k,s,g) which contains an OA(M,k,r,g) as a subarray.
Qian, Peter Z. G.   +4 more
core   +2 more sources

High Order Super Nested Arrays

open access: yes2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), 2016
Mutual coupling between sensors has a negative impact on the estimation of directions of arrival (DOAs). Sparse arrays such as nested arrays, coprime arrays, and minimum redundancy arrays (MRAs) have less mutual coupling than uniform linear arrays (ULAs).
Chun-Lin Liu   +3 more
core   +3 more sources

Nested Perfect Arrays

open access: yesIEEE Transactions on Information Theory
We introduce two-dimensional periodic arrays that are a variant of the de Bruijn tori. We call them nested perfect arrays. Instead of asking that every array of a given size has exactly one occurrence, we partition the positions in congruence classes and
Becher, Veronica Andrea, Carton, Olivier
core   +4 more sources

Beamforming using passive nested arrays of sensors [PDF]

open access: yesProceedings of 2010 IEEE International Symposium on Circuits and Systems, 2010
A novel approach to beamforming using a new class of sensor arrays is proposed, which can increase the achievable degrees of freedom significantly beyond the conventional limits obtained from uniform linear arrays (ULA). This class of arrays is named as
Piya Pal   +3 more
core   +3 more sources

Nested Arrays: A Novel Approach to Array Processing With Enhanced Degrees of Freedom [PDF]

open access: yesIEEE Transactions on Signal Processing, 2010
A new array geometry, which is capable of significantly increasing the degrees of freedom of linear arrays, is proposed. This structure is obtained by systematically nesting two or more uniform linear arrays and can provide O(N^2) degrees of freedom ...
Pal, Piya, Vaidyanathan, P. P.
core   +4 more sources

Extension of Nested Arrays with the Fourth-Order Difference Co-Array Enhancement [PDF]

open access: yes2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016
To reach a higher number of degrees of freedom by exploiting the fourth-order difference co-array concept, an effective structure extension based on two-level nested arrays is proposed.
Qing Shen   +7 more
core   +4 more sources

SEARCH AND SUBSTITUTION IN NESTED ARRAYS

open access: yesRUDN Journal of Informatization in Education, 2016
In this article simple algorithms of the solution of recursive algorithms for the simple and generalized search and replacement of elements are given in nested matrixes.
S G Grigoriev, A R Esayan
core   +2 more sources

Nested perfect toroidal arrays

open access: yesCoRR, 2023
We introduce two-dimensional toroidal arrays that are a variant of the de Bruijn tori. We call them nested perfect toroidal arrays. Instead of asking that every array of a given size has exactly one occurrence, we partition the positions in congruence classes and we ask exactly one occurrence in each congruence class.
VerĂ³nica Becher, Olivier Carton
openaire   +2 more sources

AD for an Array Language with Nested Parallelism

open access: yesSC22: International Conference for High Performance Computing, Networking, Storage and Analysis, 2022
We present a technique for applying (forward and) reverse-mode automatic differentiation (AD) on a non-recursive second-order functional array language that supports nested parallelism and is primarily aimed at efficient GPU execution. The key idea is to eliminate the need for a "tape" by relying on redundant execution to bring into each new scope all ...
Robert Schenck 0001   +3 more
openaire   +4 more sources

Distributed Super Nested Arrays: Reduce the Mutual Coupling between Array Antennas

open access: yes, 2021
In array, mutual coupling between the antennas is inevitable, which has an adverse effect on the estimation of parameters. To reduce the mutual coupling between the antennas of distributed nested arrays, this paper proposes a new array called the ...
Ying Suo   +5 more
core   +1 more source

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