Results 31 to 40 of about 123,227 (279)
, 2020 This paper concerns the maximum-likelihood channel estimation for MIMO systems with orthogonal space-time block codes when the finite alphabet constraint of the signal constellation is relaxed.
Golestani, S. Jamaloddin +1 more
core +1 more source
Algorithms for entanglement renormalization [PDF]
, 2009 We describe an iterative method to optimize the multi-scale entanglement renormalization ansatz (MERA) for the low-energy subspace of local Hamiltonians on a D-dimensional lattice.
G. Evenbly +4 more
core +2 more sources
Karpatsʹkì Matematičnì Publìkacìï, 2015 The possibility of applying the method of reducing upon finite-dimensional invariant subspaces, generated by the eigenvalues of the associated spectral problem, to some two-dimensional generalization of the relativistic Toda lattice with the triple ...
O.Ye. Hentosh
doaj +1 more source
Exact results on some nonlinear Laguerre-type diffusion equations
Mathematical Modelling and Analysis, 2021 In this paper we obtain some new explicit results for nonlinear equations involving Laguerre derivatives in space and/or in time. In particular, by using the invariant subspace method, we have many interesting cases admitting exact solutions in terms of ...
Roberto Garra, Zivorad Tomovski
doaj +1 more source
Transformation invariance in hand shape recognition [PDF]
, 2006 In hand shape recognition, transformation invariance is key for successful recognition. We propose a system that is invariant to small scale, translation and shape variations.
Coogan, Thomas, Sutherland, Alistair
core +1 more source
Noise Characterization: Keeping Reduction Based Per-turbed Quantum Walk Search Optimal
EPJ Web of Conferences, 2019 In a recent work by Novo et al. (Sci. Rep. 5, 13304, 2015), the invariant subspace method was applied to the study of continuous-time quantum walk (CTQW).
Chiang Chen-Fu, Hsieh Chang-Yu
doaj +1 more source
Exact Solutions to the Fractional Differential Equations with Mixed Partial Derivatives
Axioms, 2018 In this paper, the solvability of nonlinear fractional partial differential equations (FPDEs) with mixed partial derivatives is considered. The invariant subspace method is generalized and is then used to derive exact solutions to the nonlinear FPDEs ...
Jun Jiang, Yuqiang Feng, Shougui Li
doaj +1 more source
2D-DOA Estimation for EMVS Array with Nonuniform Noise
International Journal of Antennas and Propagation, 2021 Electromagnetic vector sensor (EMVS) array is one of the most potential arrays for future wireless communications and radars because it is capable of providing two-dimensional (2D) direction-of-arrival (DOA) estimation as well as polarization angles of ...
Chang-Xin Cai +4 more
doaj +1 more source
On the Geometry in the Large of Einstein-like Manifolds
Mathematics, 2022 Gray has presented the invariant orthogonal irreducible decomposition of the space of all covariant tensors of rank 3, obeying only the identities of the gradient of the Ricci tensor.
Josef Mikeš +3 more
doaj +1 more source
A decoupling approach to the quantum capacity [PDF]
, 2007 We give a short proof that the coherent information is an achievable rate for the transmission of quantum information through a noisy quantum channel. Our method is to produce random codes by performing a unitarily covariant projective measurement on a ...
Andreas Winter +4 more
core +2 more sources