Výsledky vyhledávání - "Jarosław Wojtuń"

Akademický článek

Frequency Instability Impact of Low-Cost SDRs on Doppler-Based Localization Accuracy

Autor: Kacper Bednarz, Jarosław Wojtuń, Jan M. Kelner, Krzysztof Różyc

Publikováno v: Sensors, Vol 24, Iss 4, p 1053 (2024)

In this paper, we explore several widely available software-defined radio (SDR) platforms that could be used for locating with the signal Doppler frequency (SDF) method. In the SDF, location error is closely related to the accuracy of determining the

Externí odkaz: https://doaj.org/article/bc4220f004364845b19aef2226713cc8

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Akademický článek

Modification of Simple Antenna Pattern Models for Inter-Beam Interference Assessment in Massive Multiple-Input–Multiple-Output Systems

Autor: Jarosław Wojtuń, Cezary Ziółkowski, Jan M. Kelner

Publikováno v: Sensors, Vol 23, Iss 22, p 9022 (2023)

The occurrence of cross-beam interference in the received signal is one of the main problems that limit the possibilities of massive multiple-input–multiple-output technology (massive-MIMO) in fifth-generation (5G) systems. Thus, the evaluation of

Externí odkaz: https://doaj.org/article/d548ca1bdbaf415a848d05fe96d0d19c

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Akademický článek

Use of tactical radio operator’s vital signs as context information for dynamic spectrum management within MANETs

Autor: Joanna Głowacka, Piotr Gajewski, Michał Ciołek, Krzysztof Parobczak, Jarosław Wojtuń

Publikováno v: EAI Endorsed Transactions on Wireless Spectrum, Vol 4, Iss 13 (2020)

INTRODUCTION: The Authors present a new approach to a method of dynamic spectrum management for militarymobile ad hoc network. They propose that data concerning vital signs of tactical radio operators be used as contextinformation for spectrum manage

Externí odkaz: https://doaj.org/article/7c0f9c8844aa4061a3baff54a6fe844a

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Akademický článek

Synchronization of Acoustic Signals for Steganographic Transmission

Autor: Jarosław Wojtuń, Zbigniew Piotrowski

Publikováno v: Sensors, Vol 21, Iss 10, p 3379 (2021)

Steganography is a technique that makes it possible to hide additional information (payload) in the original signal (cover work). This paper focuses on hiding information in a speech signal. One of the major problems with steganographic systems is en

Externí odkaz: https://doaj.org/article/aae237b6deb941bf9f53fc6cf9a4453a

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