Results 41 to 50 of about 236,630 (266)
, 2011 Frames have established themselves as a means to derive redundant, yet stable decompositions of a signal for analysis or transmission, while also promoting sparse expansions.
Casazza, Peter G. +3 more
core +1 more source
FTN multicarrier transmission based on tight Gabor frames
EURASIP Journal on Wireless Communications and Networking, 2017 A multicarrier signal can be synthesized thanks to a symbol sequence and a Gabor family (i.e., a regularly time–frequency shifted version of a generator pulse).
Alexandre Marquet +3 more
doaj +1 more source
Frontiers in Earth Science, 2021 Strong heterogeneity of pore microstructures leads to complicated velocity-porosity relationships in tight sandstone that cannot be well explained by conventional empirical formulas.
Zhiqi Guo +5 more
doaj +1 more source
Partitions of equiangular tight frames
Linear Algebra and its Applications, 2017 19 pages, 2 ...
James Rosado, Hieu D. Nguyen, Lei Cao
openaire +3 more sources
Lapped Tight Frame Transforms [PDF]
2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 We propose a new class of equal-norm tight frames termed lapped tight frame transforms (LTFTs). These can be seen as a redundant counterpart to bases known as lapped orthogonal transforms (LOTs) introduced by Malvar and Cassereau, as well as an infinite-dimensional counterpart to harmonic tight frames (HTFs).
Amina Chebira, Jelena Kovacevic
openaire +1 more source
Tight wavelet frames in Lebesgue and Sobolev spaces
Journal of Function Spaces and Applications, 2004 We study tight wavelet frame systems in Lp(ℝd) and prove that such systems (under mild hypotheses) give atomic decompositions of Lp(ℝd) for 1≺p≺∞. We also characterize Lp(ℝd) and Sobolev space norms by the analysis coefficients for the frame. We consider
L. Borup, R. Gribonval, M. Nielsen
doaj +1 more source
Tight Frame Completions with Prescribed Norms [PDF]
Sampling Theory in Signal and Image Processing, 2008 Let $\hil$ be a finite dimensional (real or complex) Hilbert space and let $\{a_i\}_{i=1}^\infty$ be a non-increasing sequence of positive numbers. Given a finite sequence of vectors $\f$ in $\hil$ we find necessary and sufficient conditions for the existence of $r\in \NN\cup\{\infty\}$ and a Bessel sequence $\g$ in $\hil$ such that $\cF\cup\cG$ is a ...
Massey, Pedro Gustavo +1 more
openaire +3 more sources
Finding Subsampling Index Sets for Kronecker Product of Unitary Matrices for Incoherent Tight Frames
Applied Sciences, 2022 Frames are recognized for their importance in many fields of communications, signal processing, quantum physics, and so on. In this paper, we design an incoherent tight frame by selecting some rows of a matrix that is the Kronecker product of Fourier and
Jooeun Kwon, Nam Yul Yu
doaj +1 more source
Defining Roles in Pediatric Palliative Care: Perspectives From Oncology and Palliative Care Teams
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Early integration of pediatric palliative care (PPC) is associated with improved symptom management, quality of life, and healthcare utilization for children with cancer. Despite this, variation persists in how PPC is understood, operationalized, and integrated within pediatric oncology programs. In particular, ambiguity surrounding
Leeat Granek +13 more
wiley +1 more source
Decompositions of g-Frames and Duals and Pseudoduals of g-Frames in Hilbert Spaces
Journal of Function Spaces, 2015 Firstly, we study the representation of g-frames in terms of linear combinations of simpler ones such as g-orthonormal bases, g-Riesz bases, and normalized tight g-frames.
Xunxiang Guo
doaj +1 more source