نتایج جستجو برای: efficient multi step transforms method

تعداد نتایج: 2511220  

Journal: :IEEE Transactions on Antennas and Propagation 2022

As an alternative method to the discrete split-step Fourier (DSSF) method, wavelet has recently been derived. This based on a decomposition of field is efficient and accurate in simulating long-range propagation electromagnetic waves low troposphere. In this article, further improve computational efficiency take full advantage characteristics, wavelet-to-wavelet (WWP) proposed. The propagation,...

2014
Hanie Sedghi Anima Anandkumar Edmond A. Jonckheere

In this paper, we consider a multi-step version of the stochastic ADMM method with efficient guarantees for high-dimensional problems. We first analyze the simple setting, where the optimization problem consists of a loss function and a single regularizer (e.g. sparse optimization), and then extend to the multi-block setting with multiple regularizers and multiple variables (e.g. matrix decompo...

Journal: :IEEE Signal Processing Letters 2022

This paper proposes an efficient direction of departure (DOD) and arrival (DOA) estimation method for multi-input multi-output (MIMO) systems. For uncorrelated scenarios, the redundancy covariance matrix is first exploited by establishing its concise representation through reduction, which transforms original large-size into a smaller-size without loss useful angle information. Then, resulting ...

Journal: :Advances in Mathematics 2021

The transient heating of a spherical droplet at rest in hot gas environment, is analysed when the temperature distribution initially assumed to be non uniform inside droplet. A combined method integral transforms, namely classical Fourier cosine transform together with unilateral Laplace transform, used solving resulting initial-boundary value problem, stated dimensionless form. Explicit soluti...

A. Pakbaz, H. Fazli,

In this paper an optimization framework is presented for automated performance-based seismic design of bridges consisting of multi-column RC pier substructures. The beneficial effects of fusing components on seismic performance of the quasi-isolated system is duly addressed in analysis and design. The proposed method is based on a two-step structural analysis consisting of a linear modal dynami...

2013
C. HARINATH BABU K. K. VARA LAKSHMI

This brief paper proposes an efficient multi-input/multi-output VLSI Folded Architecture (MIMOFA) for two-dimensional lifting-based discrete wavelet transforms (DWT). In comparison with other 2-D DWT folded architecture, the advantages of the proposed architecture are 100% hardware utilization, fast computing time (10 times of the parallel filters), regular data flow, and low control complexity...

2011
John Korah

Increasing size and prevalence of real time information have become important characteristics of databases found on the internet. Due to changing information, the relevancy ranking of the search results also changes. Current methods in information retrieval, which are based on offline indexing, are not efficient in such dynamic search spaces and cannot quickly provide the most current results. ...

Journal: :Pattern Recognition Letters 2006
Zhijun Zhang Yifeng Jiang Hung-Tat Tsui

In this paper, a novel variational approach for multi-modal image registration based on consistent non-rigid transforms is proposed. The forward and backward transforms are computed in a variational framework simultaneously. A consistency energy is added into the variational registration framework and an iterative method assures that the forward and backward transforms are close approximate inv...

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