Publications related to Over-the-Air Computation via Reconfigurable Intelligent Surface

FID-guided retrospective motion correction based on autofocusing

Rolf Gruetter, Tobias Kober, Cristina Granziera, Gunnar Krüger

This work investigates the possibility of using FID navigator signals to improve the performance of a recently proposed autofocusing-based retrospective motion correction technique. FID navigators were incorporated into an MP-RAGE sequence and 3 subjects w ...

2014

MR Image Reconstruction from Generalized Projections

Daniel Gallichan

Purpose: Currently, the time required for image reconstruction is prohibitively long if data are acquired using multidimensional imaging trajectories that make use of multichannel systems equipped with nonlinear gradients. Methods are presented that reduce ...

Wiley-Blackwell2014

Anatomical Priors to improve Global Tractography

Jean-Philippe Thiran, Alessandro Daducci, Alia Lemkaddem

The main assumption of fiber-tracking algorithms is that fiber trajectories are represented by paths of highest diffusion, which is usually accomplished by following the principal diffusion directions in every voxel. The state-of-the-art approaches known a ...

2014

Switched Local Schedules for Diamond Networks

Christina Fragouli, Siddhartha Brahma, Ayan Sengupta

We consider a Gaussian diamond network where a source communicates with the destination through

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non-interfering half-duplex relays. We focus on half-duplex schedules that utilize only local channel state information, i.e., each relay has access to its ...

2014

Blind Phase Calibration in Sparse Recovery

Rémi Gribonval, Gilles Puy

We consider a blind calibration problem in a compressed sensing measurement system in which each sensor introduces an unknown phase shift to be determined. We show that this problem can be approached similarly to the problem of phase retrieval from quadrat ...

2013

A reduced computational and geometrical framework for inverse problems in haemodynamics

Alfio Quarteroni, Gianluigi Rozza, Andrea Manzoni, Toni Mikael Lassila

The solution of inverse problems in cardiovascular mathematics is computationally expensive. In this paper we apply a domain parametrization technique to reduce both the geometrical and computational complexity of the forward problem, and replace the finit ...

Wiley-Blackwell2013

Interactive Function Computation

Michael Christoph Gastpar

We investigate the role of interaction for computa- tion problem settings where nodes intend to compute functions of the raw messages generated at other nodes. In this work, we make some progress on a more elementary research component: feedback. Specifica ...

2013

On Self-interference Suppression Methods for Low-complexity Full-duplex MIMO

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Pavle Belanovic, Konstantinos Alexandris

Full-duplex wireless communication offers improved spectral efﬁciency, as well as more efﬁcient relaying and medium access, but requires suppression of self-interference. In this paper we analyze the existing methods for active RF suppression and use the ” ...

2013

Computation over Gaussian networks with orthogonal components

Michael Christoph Gastpar, Chien-Yi Wang

Function computation of arbitrarily correlated discrete sources over Gaussian networks with multiple access components but no broadcast is studied. Two classes of functions are considered: the arithmetic sum function and the frequency histogram function. T ...

2013

On the online track assignment problem

Benjamin Leroy-Beaulieu

This paper aims to start an analytical study of the computational complexity of some online We analyze the following problem. Consider a train station consisting of a set of parallel tracks. Each track can be approached from one side only or from both side ...

2012

Over-the-Air Computation via Reconfigurable Intelligent Surface

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FID-guided retrospective motion correction based on autofocusing

MR Image Reconstruction from Generalized Projections

Anatomical Priors to improve Global Tractography

Switched Local Schedules for Diamond Networks

Blind Phase Calibration in Sparse Recovery

A reduced computational and geometrical framework for inverse problems in haemodynamics

Interactive Function Computation

On Self-interference Suppression Methods for Low-complexity Full-duplex MIMO

Computation over Gaussian networks with orthogonal components

On the online track assignment problem

On Self-interference Suppression Methods for Low-complexity Full-duplex MIMO

Blind Phase Calibration in Sparse Recovery

On the online track assignment problem

FID-guided retrospective motion correction based on autofocusing

Switched Local Schedules for Diamond Networks

Anatomical Priors to improve Global Tractography

MR Image Reconstruction from Generalized Projections

A reduced computational and geometrical framework for inverse problems in haemodynamics

Computation over Gaussian networks with orthogonal components

Interactive Function Computation