User profiles for Ilya Soloveychik
Ilya SoloveychikAssistant Professor, The Hebrew University of Jerusalem Verified email at mail.huji.ac.il Cited by 295 |
A channel matching based hybrid analog-digital strategy for massive multi-user MIMO downlink systems
J Zhang, M Haardt, I Soloveychik… - 2016 IEEE Sensor Array …, 2016 - ieeexplore.ieee.org
In this paper we study the downlink of a hybrid analog-digital massive multi-user MIMO (MU-MIMO)
system. An efficient hybrid strategy is proposed, where the analog beamforming …
system. An efficient hybrid strategy is proposed, where the analog beamforming …
Tyler's covariance matrix estimator in elliptical models with convex structure
I Soloveychik, A Wiesel - IEEE Transactions on Signal …, 2014 - ieeexplore.ieee.org
We address structured covariance estimation in elliptical distributions by assuming that the
covariance is a priori known to belong to a given convex set, eg, the set of Toeplitz or banded …
covariance is a priori known to belong to a given convex set, eg, the set of Toeplitz or banded …
Group symmetric robust covariance estimation
I Soloveychik, D Trushin… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
In this paper, we consider Tyler's robust covariance M-estimator under group symmetry
constraints. We assume that the covariance matrix is invariant to the conjugation action of a …
constraints. We assume that the covariance matrix is invariant to the conjugation action of a …
Invariance theory for adaptive detection in interference with group symmetric covariance matrix
A De Maio, D Orlando, I Soloveychik… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
This paper describes the adaptive detection of point-like targets in a Gaussian environment
assuming a group symmetric structure for the interference covariance matrix. This special …
assuming a group symmetric structure for the interference covariance matrix. This special …
[HTML][HTML] Gaussian and robust Kronecker product covariance estimation: Existence and uniqueness
I Soloveychik, D Trushin - Journal of Multivariate Analysis, 2016 - Elsevier
We study the Gaussian and robust covariance estimation, assuming the true covariance matrix
to be a Kronecker product of two lower dimensional square matrices. In both settings we …
to be a Kronecker product of two lower dimensional square matrices. In both settings we …
Simultaneous penalized M-estimation of covariance matrices using geodesically convex optimization
A common assumption when sampling $p$-dimensional observations from $K$ distinct
group is the equality of the covariance matrices. In this paper, we propose two penalized $M$-…
group is the equality of the covariance matrices. In this paper, we propose two penalized $M$-…
Performance analysis of Tyler's covariance estimator
I Soloveychik, A Wiesel - IEEE Transactions on Signal …, 2014 - ieeexplore.ieee.org
This paper analyzes the performance of Tyler's M-estimator of the scatter matrix in elliptical
populations. We focus on the non-asymptotic setting and derive estimation error bounds …
populations. We focus on the non-asymptotic setting and derive estimation error bounds …
Keyformer: KV Cache Reduction through Key Tokens Selection for Efficient Generative Inference
Transformers have emerged as the underpinning architecture for Large Language Models (LLMs).
In generative language models, the inference process involves two primary phases: …
In generative language models, the inference process involves two primary phases: …
Symmetric pseudo-random matrices
I Soloveychik, Y Xiang, V Tarokh - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
We consider the problem of generating symmetric pseudo-random sign (±1) matrices based
on the similarity of their spectra to Wigner's semicircular law. Using binary m-sequences (…
on the similarity of their spectra to Wigner's semicircular law. Using binary m-sequences (…
Pseudo-Wigner matrices
I Soloveychik, Y Xiang, V Tarokh - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
We consider the problem of generating pseudorandom matrices based on the similarity of
their spectra to Wigner's semicircular law. We introduce the notion of an r-independent pseudo…
their spectra to Wigner's semicircular law. We introduce the notion of an r-independent pseudo…