Search Results for author: Slawomir Stanczak

Found 24 papers, 1 papers with code

Neuromorphic Wireless Device-Edge Co-Inference via the Directed Information Bottleneck

no code implementations2 Apr 2024 Yuzhen Ke, Zoran Utkovski, Mehdi Heshmati, Osvaldo Simeone, Johannes Dommel, Slawomir Stanczak

An important use case of next-generation wireless systems is device-edge co-inference, where a semantic task is partitioned between a device and an edge server.

Federated Learning in UAV-Enhanced Networks: Joint Coverage and Convergence Time Optimization

no code implementations31 Aug 2023 Mariam Yahya, Setareh Maghsudi, Slawomir Stanczak

We then develop a model and solution based on the multi-objective multi-armed bandit theory to maximize the network coverage while minimizing the FL delay.

Federated Learning

D-Band RIS as a Reflect Array: Characterization and Hardware Impairments Study

no code implementations10 May 2023 Ehsan Tohidi, Robert Stoecker, Julia-Marie Koeszegi, Slawomir Stanczak

Reflecting intelligent surface (RIS) has emerged as a promising technology for enhancing wireless communication performance and enabling new applications in 6G networks with potentially low energy consumption and hardware complexity thanks to their passive nature.

Near-Optimal LOS and Orientation Aware Intelligent Reflecting Surface Placement

no code implementations5 May 2023 Ehsan Tohidi, Sven Haesloop, Lars Thiele, Slawomir Stanczak

More specifically, locations, which determine whether BS-IRS and IRS-UE line of sight (LOS) links exist, and surface orientation, which determines whether the BS and UE are within the field of view (FoV) of the surface, play crucial roles in the quality of provided coverage.

Combinatorial Optimization

BiSPARCs for Unsourced Random Access in Massive MIMO

no code implementations27 Apr 2023 Patrick Agostini, Zoran Utkovski, Slawomir Stanczak

The detection step is followed by a per-user soft-input-soft-output (SISO) decoding of the outer channel code in combination with a successive interference cancellation (SIC) step.

Characterization of the weak Pareto boundary of resource allocation problems in wireless networks -- Implications to cell-less systems

no code implementations14 Apr 2023 Renato Luis Garrido Cavalcante, Lorenzo Miretti, Slawomir Stanczak

We establish necessary and sufficient conditions for a network configuration to provide utilities that are both fair and efficient in a well-defined sense.

Machine Learning-based Methods for Reconfigurable Antenna Mode Selection in MIMO Systems

no code implementations24 Nov 2022 Yasaman Abdollahian, Ehsan Tohidi, Martin Kasparick, Li Wang, Ahmet Hasim Gokceoglu, Slawomir Stanczak

Due to the non-convexity of this problem, we propose machine learning-based methods for RA antenna mode selection in both dynamic and static scenarios.

Parallel APSM for Fast and Adaptive Digital SIC in Full-Duplex Transceivers with Nonlinearity

no code implementations12 Jul 2022 M. Hossein Attar, Omid Taghizadeh, Kaxin Chang, Ramez Askar, Matthias Mehlhose, Slawomir Stanczak

This paper presents a kernel-based adaptive filter that is applied for the digital domain self-interference cancellation (SIC) in a transceiver operating in full-duplex (FD) mode.

A Learning-Based Approach to Approximate Coded Computation

no code implementations19 May 2022 Navneet Agrawal, Yuqin Qiu, Matthias Frey, Igor Bjelakovic, Setareh Maghsudi, Slawomir Stanczak, Jingge Zhu

Lagrange coded computation (LCC) is essential to solving problems about matrix polynomials in a coded distributed fashion; nevertheless, it can only solve the problems that are representable as matrix polynomials.

Unsupervised Domain Adaptation across FMCW Radar Configurations Using Margin Disparity Discrepancy

no code implementations9 Mar 2022 Rodrigo Hernangomez, Igor Bjelakovic, Lorenzo Servadei, Slawomir Stanczak

Commercial radar sensing is gaining relevance and machine learning algorithms constitute one of the key components that are enabling the spread of this radio technology into areas like surveillance or healthcare.

BIG-bench Machine Learning Unsupervised Domain Adaptation

Superiorized Adaptive Projected Subgradient Method with Application to MIMO Detection

no code implementations2 Mar 2022 Jochen Fink, Renato L. G. Cavalcante, Slawomir Stanczak

In this paper, we show that the adaptive projected subgradient method (APSM) is bounded perturbation resilient.

Distributed Machine-Learning for Early HARQ Feedback Prediction in Cloud RANs

no code implementations17 Feb 2022 Barış Göktepe, Cornelius Hellge, Thomas Schierl, Slawomir Stanczak

Compared to regular HARQ, the DA2SGMM reduces the maximum transmission latency by more than 72. 4 %, while maintaining more than 75 % of the throughput in the no-blockage scenario.

BIG-bench Machine Learning Denoising

Robust Cell-Load Learning with a Small Sample Set

no code implementations21 Mar 2021 Daniyal Amir Awan, Renato L. G. Cavalcante, Slawomir Stanczak

Learning of the cell-load in radio access networks (RANs) has to be performed within a short time period.

Set-Theoretic Learning for Detection in Cell-Less C-RAN Systems

no code implementations21 Mar 2021 Daniyal Amir Awan, Renato L. G. Cavalcante, Zoran Utkovski, Slawomir Stanczak

Cloud-radio access network (C-RAN) can enable cell-less operation by connecting distributed remote radio heads (RRHs) via fronthaul links to a powerful central unit.

Quantization

Multi-Group Multicast Beamforming by Superiorized Projections onto Convex Sets

no code implementations23 Feb 2021 Jochen Fink, Renato L. G. Cavalcante, Slawomir Stanczak

We formulate a convex relaxation of the problem as a semidefinite program in a real Hilbert space, which allows us to approximate a point in the feasible set by iteratively applying a bounded perturbation resilient fixed-point mapping.

Channel covariance estimation in multiuser massive MIMO systems with an approach based on infinite dimensional Hilbert spaces

no code implementations12 Jun 2020 Renato Luis Garrido Cavalcante, Slawomir Stanczak

We propose a novel algorithm to estimate the channel covariance matrix of a desired user in multiuser massive MIMO systems.

Machine Learning-Based Adaptive Receive Filtering: Proof-of-Concept on an SDR Platform

no code implementations11 Nov 2019 Matthias Mehlhose, Daniyal Amir Awany, Renato L. G. Cavalcante, Martin Kurras, Slawomir Stanczak

As an alternative to conventional methods, this paper proposes and demonstrates a low-complexity practical Machine Learning (ML) based receiver that achieves similar (and at times better) performance to the SIC receiver.

BIG-bench Machine Learning

Spectral radii of asymptotic mappings and the convergence speed of the standard fixed point algorithm

no code implementations15 Mar 2018 Renato L. G. Cavalcante, Slawomir Stanczak

To address this limitation of existing approaches, we show in this study that the spectral radii of asymptotic mappings can be used to identify an important subclass of contractive mappings and also to estimate their moduli of contraction.

Optimal deep neural networks for sparse recovery via Laplace techniques

1 code implementation4 Sep 2017 Steffen Limmer, Slawomir Stanczak

Owing to the specific structure, it is shown that the centroid can be computed analytically by extending a recent result that facilitates the volume computation of polytopes via Laplace transformations.

Kernel-Based Adaptive Online Reconstruction of Coverage Maps With Side Information

no code implementations3 Apr 2014 Martin Kasparick, Renato L. G. Cavalcante, Stefan Valentin, Slawomir Stanczak, Masahiro Yukawa

In this paper, we address the problem of reconstructing coverage maps from path-loss measurements in cellular networks.

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