Low-overhead hierarchically-sparse channel estimation for multiuser wideband massive MIMO

G Wunder, S Stefanatos, A Flinth… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Numerical evidence suggests that compressive sensing (CS) approaches for wideband
massive MIMO channel estimation can achieve very good performance with limited training …

Temporal correlation enhanced sparse activity detection in MIMO enabled grant-free NOMA

L Wu, Z Wang, P Sun, Y Yang - IEEE Transactions on Vehicular …, 2021 - ieeexplore.ieee.org
Exploiting the sparse user activity induced by sporadic transmission, compressed sensing
(CS) has been widely applied in multiple-input multiple-output (MIMO) enabled non …

Jointly low-rank and bisparse recovery: Questions and partial answers

S Foucart, R Gribonval, L Jacques… - Analysis and …, 2020 - World Scientific
We investigate the problem of recovering jointly r-rank and s-bisparse matrices from as few
linear measurements as possible, considering arbitrary measurements as well as rank-one …

Reliable recovery of hierarchically sparse signals for Gaussian and Kronecker product measurements

I Roth, M Kliesch, A Flinth, G Wunder… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
We propose and analyze a solution to the problem of recovering a block sparse signal with
sparse blocks from linear measurements. Such problems naturally emerge inter alia in the …

Hierarchical sparse channel estimation for massive MIMO

G Wunder, I Roth, M Barzegar, A Flinth… - WSA 2018; 22nd …, 2018 - ieeexplore.ieee.org
The problem of wideband massive MIMO channel estimation is considered. Targeting for
low complexity algorithms as well as small training overhead, a compressive sensing (CS) …

Hierarchical compressed sensing

J Eisert, A Flinth, B Groß, I Roth, G Wunder - Compressed Sensing in …, 2022 - Springer
Compressed sensing is a paradigm within signal processing that provides the means for
recovering structured signals from linear measurements in a highly efficient manner …

Semi-device-dependent blind quantum tomography

I Roth, J Wilkens, D Hangleiter, J Eisert - Quantum, 2023 - quantum-journal.org
Extracting tomographic information about quantum states is a crucial task in the quest
towards devising high-precision quantum devices. Current schemes typically require …

[HTML][HTML] Hierarchical isometry properties of hierarchical measurements

A Flinth, B Groß, I Roth, J Eisert, G Wunder - Applied and Computational …, 2022 - Elsevier
Compressed sensing studies linear recovery problems under structure assumptions. We
introduce a new class of measurement operators, coined hierarchical measurement …

On the Restricted Isometry Property of Kronecker-structured Matrices

Y He, G Joseph - arxiv preprint arxiv:2409.08699, 2024 - arxiv.org
In this work, we study the restricted isometry property (RIP) of Kronecker-structured matrices,
formed by the Kronecker product of two factor matrices. Previously, only upper and lower …

Hierarchical sparse recovery from hierarchically structured measurements with application to massive random access

B Groß, A Flinth, I Roth, J Eisert… - 2021 IEEE Statistical …, 2021 - ieeexplore.ieee.org
A new family of operators, dubbed hierarchical measurement operators, is introduced and
discussed within the framework of hierarchically sparse recovery. A hierarchical …