Search results for: GNU RADIO COMPANION

• Application of the GNU Radio platform in the multistatic radar

  Publication

  • B. Szlachetko
  • A. Lewandowski

  - Year 2009

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• OPROGRAMOWANIE I SPRZĘT W TECHNOLOGII RADIA PROGRAMOWALNEGO

  Publication

  • A. Marczak

  - Year 2014

  Technologia radia programowalnego (ang. Software Defined Radio) umożliwia realizację urządzeń pracujących w różnego rodzaju cywilnych i wojskowych systemach radiowych. W pracy zaprezentowano zagadnienia dotyczące koncepcji realizacji radia programowalnego. Zaprezentowano oprogramowanie GNU Radio, służące do realizacji operacji przetwarzania sygnałów w torach nadawczo-odbiorczych urządzeń zrealizowanych w technologii SDR. Przedstawiono...

• REALIZACJA INTERFEJSU RADIOWEGO OFDM W TECHNOLOGII RADIA PROGRAMOWALNEGO DO ZASTOSOWAŃ TRANSPORTOWYCH

  Publication

  • A. Marczak

  - PRACE NAUKOWE POLITECHNIKI WARSZAWSKIEJ. SERIA: TRANSPORT - Year 2016

  Metoda wielodostępu OFDM, jest stosowana obecnie w wielu standardach łączności radiowej, w tym w standardzie IEEE802.11p, który jest przewidziany do wykorzystania w Samochodowym Systemie Komunikacji. Technologia radia programowalnego (ang. Software Defined Radio) umożliwia realizacje urządzeń pracujących z tą metodą wielodostępu. W referacie zaprezentowano oprogramowanie GNU Radio i środowisko graficzne GNU Radio Companion służące...

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• REALIZACJA INTERFEJSU RADIOWEGO OFDM W TECHNOLOGII RADIA PROGRAMOWALNEGO DO ZASTOSOWAŃ WOJSKOWYCH

  Publication

  • A. Marczak

  - Year 2016

  Metoda wielodostępu OFDM, jest stosowana obecnie w wielu standardach łączności radiowej, w tym w standardzie IEEE802.11p, który jest przewidziany do realizacji transmisji danych pomiędzy pojazdami, oraz pomiędzy pojazdami i infrastrukturą znajdującą się w pobliżu drogi. Technologia radia programowalnego (ang. Software Defined Radio) umożliwia realizacje urządzeń pracujących z tą metodą wielodostępu. W referacie zaprezentowano oprogramowanie...

• TECHNOLOGIA RADIA PROGRAMOWALNEGO W TRANSPORCIE SZYNOWYM

  Publication

  • A. Marczak

  - Problemy Kolejnictwa - Year 2015

  Technologia radia programowalnego umożliwia wykonanie urządzeń pracujących w różnego rodzaju analogowych i cyfrowych systemach łączności radiowej. W artykule zaprezentowano zagadnienia dotyczące koncepcji przeprowadzenia radia programowalnego. Zaprezentowano oprogramowanie GNU Radio, służące do realizacji operacji przetwarzania sygnałów w torach nadawczo-odbiorczych urządzeń zrealizowanych w technologii SDR. Przedstawiono również...

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• Technologia radia programowalnego w procesie kształcenia studentów ICT

  Publication

  • P. Falkowski-Gilski

  - Year 2015

  Technologie informacyjne i telekomunikacyjne ICT (Information and Communication Technologies) są współcześnie synonimem nowoczesności, innowacyjności oraz jednym z głównych czynników wzrostu społeczno-gospodarczego. Uczelnie wyższe stoją przed wyzwaniem, aby dostosować program studiów i metody nauczania do potrzeb rynku, przy jednoczesnym zachowaniu wysokiej jakości kształcenia. Obecnie studenci wyższych uczelni na kierunkach technicznych...

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• Sławomir Jerzy Ambroziak dr hab. inż.

  People

  Department of Radiocommunication Systems and Networks

  Sławomir J. Ambroziak was born in Poland, in 1982. He received the M.Sc., Ph.D. and D.Sc. degrees in radio communication from Gdańsk University of Technology (Gdańsk Tech), Poland, in 2008, 2013, and 2020 respectively. Since 2008 he is with the Department of Radiocommunication Systems and Networks of the Gdańsk Tech: 2008-2013 as Research Assistant, 2013-2020 as Assistant Professor, and since 2020 as Associate Professor. He is...

• Kreowanie wartości publicznej przez wykorzystanie wolnego i otwartego oprogramowania GNU Health

  Publication

  • A. Baj-Rogowska

  - Roczniki Kolegium Analiz Ekonomicznych - Year 2018

  Głównym celem pracy jest prezentacja roli, potencjału i funkcjonalności oprogramowania GNU Health. Ten zaawansowany i dojrzały, wysokiej jakości produkt - opracowany i nieustannie rozwijany w ramach projektu wolnego i otwartego oprogramowania - jest z sukcesem wdrażany w placówkach ochrony zdrowia w wielu krajach. Jego zastosowanie przyczynia się nie tylko do usprawnień w zarządzaniu praktyką medyczną lecz również odgrywa ważną...

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• Multi-Aspect Quality Assessment Of Mobile Image Classifiers For Companion Applications In The Publishing Sector

  Publication

  • K. Draszawka

  - Year 2021

  The paper presents the problem of quality assessment of image classifiers used in mobile phones for complimentary companion applications. The advantages of using this kind of applications have been described and a Narrator on Demand (NoD) functionality has been described as one of the examples, where the application plays an audio file related to a book page that is physically in front of the phone's camera. For such a NoD application,...

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• Jacek Stefański prof. dr hab. inż.

  People

  Faculty of Electronics, Telecommunications and Informatics, Department of Radiocommunication Systems and Networks

  JJacek Stefański received M.Sc., Ph.D. and D.Sc. degrees in telecommunications engineering from Gdansk University of Technology (GUT), Poland, in 1993, 2000 and 2012, respectively. Awarded title of Professor by the President of Poland in 2020. Currently, he works as a professor at the Department of Radio Communication Systems and Networks (DRCSN) in GUT. From 2005 to 2009, he worked as an assistant professor in the National Institute...

• Wideband Radio Direction Finder Implemented in Software Defined Radio Technology

  Publication

  • K. Cwalina
  • P. Rajchowski
  • J. Sadowski

  - Applied Mechanics and Materials - Year 2015

  In the paper a wideband radio direction finder (RDF) implemented in software defined radio (SDR) technology and the results of hardware layer research, including developed antenna switching unit (ASU), are presented. The results of tests of the devices, which are the part of the software defined radio platform (SDRP), and antenna switching unit, confirmed the possibility of using selected components in the final solution.

• The Influence of the Radio Channel on Precision of Position Estimation of the User Terminal Using the NB-IoT Radio Interface

  Publication

  • P. Rajchowski
  • K. Cwalina
  • J. Sadowski

  - Year 2023

  In the article the method of user terminal position estimation using the broadcast signals transmitted in the downlink of the NB-IoT interface was presented, including the analysis of the radio channel influence on precision of position estimation as well as the eNodeB (Evolved Node B) synchronization. The practical ability to estimate the position in the test area has been verified in the laboratory conditions, using the reference...

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• Measuring research on radio wave propagation

  Publication

  • S. J. Ambroziak

  - Year 2010

  Telecommunication connections are increasingly based on the wireless links, both fixed and mobile, carried out under different radio systems. This kind of solution has many advantages. However, the propagation medium is a factor that causes many difficulties in designing wireless networks, because of large diversity of propagation environments. Transmission loss in each environment is determined by many variables phenomena and...

• Trunked Radio Solutions for Special Application

  Publication

  • S. Gajewski
  • M. Gajewska
  • R. Katulski

  - International Journal of Electronics and Telecommunications - Year 2014

  In the paper modern concepts of radio communication trunking-dispatch systems for special applications are presented. Basic standards of TETRA, DMR, and cdma2000 are mentioned. The aim of the paper is to present innovative trunking solutions based on the LTE system working both in FDD and TDD mode. The architecture of LTE trunked radio is shown as well as new services possible to implementation are described. The way of TETRA and...

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• [ITiT] Transmission Channel in Radio Communication Systems

  e-Learning Courses

  • S. J. Ambroziak

  {mlang pl} Dyscyplina: informatyka techniczna i telekomunikacja Zajęcia fakultatywne dla doktorantów II roku Prowadzący:  dr hab. inż. Sławomir Ambroziak, prof. PG Liczba godzin: 15 Forma zajęć: wykład {mlang} {mlang en} Discipline: technical informatics and telecommunications Elective course for 2nd-year PhD students Academic teachers: dr hab. inż. Sławomir Ambroziak, prof. PG Total hours of training: 15 teaching hours Course...

• Survey of Radio Navigation Systems

  Publication

  • P. Falkowski-Gilski
  • J. Stefański

  - International Journal of Electronics and Telecommunications - Year 2015

  At present, there is a growing demand for radio navigation systems, ranging from pedestrian navigation to consumer behavior analysis. These systems have been successfully used in many applications and have become very popular in recent years. In this paper we present a review of selected wireless positioning solutions operating in both indoor and outdoor environments. We describe different positioning techniques, methods, systems,...

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• Radio Physics and Radio Astronomy

  Journals

  ISSN: 1027-9636 , eISSN: 2415-7007

• Radio programowalne - nowoczesna platforma dydaktyczna

  Publication

  • P. Falkowski-Gilski
  • J. Stefański

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2014

  Przedstawiono technologię radia programowalnego jako nowoczesną platformę dydaktyczną. Zaproponowane podejście pozwala na efektywniejsze planowanie stanowisk laboratoryjnych. Umożliwia skrócenie czasu realizacji etapów związanych z projektowaniem, symulacją i testowaniem działania łącza radiowego. Pozwala również na elastyczną zmianę stanowisk laboratoryjnych zgodnie z dynamicznym rozwojem współczesnych systemów radiokomunikacyjnych.

• Radio Communication Antennas and MIMO Techniques (2023/24)

  e-Learning Courses

  • J. Magiera

  Course assigned to the following subject: - Radio Communication Antennas and MIMO Techniques (profile Radio Communication Systems and Networks [EN])

• Design of radio communication systems for unmanned transport applications

  Publication

  • S. Gajewski

  - Archives of Transport System Telematics - Year 2016

  In the paper the principle of OFDMA-based radio communication systems design for unmanned transport applications is presented. The concept of system radio interface is analysed and its basic parameters proposal are considered. In the last part of the paper some air interface characteristics useful for optimization of throughput and system capacity are considered.

• Radio Link Measurement Methodology for Location Service Applications

  Publication

  • J. Stefański

  - Metrology and Measurement Systems - Year 2012

  The aim of this paper is the methodology of measurements executed in a radio link for the realization of radiolocation services in radiocommunication networks, particularly in cellular networks. The main results of the measurements obtained in the physical layer of the universal mobile telecommunications system (UMTS) are introduced. A new method for the utilization of the multipath propagation phenomenon to improve the estimation...

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• [ITiT] Transmission Channel in Radio Communication Systems - 2023/2024

  e-Learning Courses

  • S. J. Ambroziak

  {mlang pl} Dyscyplina: informatyka techniczna i telekomunikacja Zajęcia fakultatywne dla doktorantów II roku Prowadzący:  dr hab. inż. Sławomir Ambroziak, prof. PG Liczba godzin: 15 Forma zajęć: wykład {mlang} {mlang en} Discipline: technical informatics and telecommunications Elective course for 2nd-year PhD students Academic teachers: dr hab. inż. Sławomir Ambroziak, prof. PG Total hours of training: 15 teaching hours Course...

• Transmission Quality in MC-CDMA Radio Interface with Turbo Codes

  Publication

  • A. Marczak

  - Year 2012

  Multi-Carrier Code Division Multiple Access techiques is a combination of two radio access techniques: Code Division Multiple Access (CDMA) and Orthogonal Frequency-called Division Multiplexing (OFDM) and has the advantages of both techniques. The paper presents the design of transmitter and receiver for MC-CDMA radio interface and the simulation results of the transmission quality in AWGN channel.

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• Signals of the 5G Standalone Radio Interface

  Open Research Data

  open access

  • P. Rajchowski
  • J. Magiera
  • A. Czapiewska
  • S. Ambroziak
  • K. Cwalina
  • P. Skokowski
  • J. Kelner
  • K. Malon
  • K. Maślanka
  • M. Kryk

  - series: 1.0

  The research work conducted within the scope of NATO-STO (North Atlantic Treaty Organization – Science and Technology Organization) IST-187 group assumed investigation of the 5G gNodeB performance. The downlink (DL) signals of the FDD (Frequency Division Duplex) 5G-Standalone station were registered in isolated and controlled laboratory conditions....

• Radio Journal

  Journals

  ISSN: 1476-4504

• RADIO SCIENCE

  Journals

  ISSN: 0048-6604 , eISSN: 1944-799X

• Radio Simulcasting at a Glance: a New Look at Broadcasting and Streaming Services

  Publication

  • P. Falkowski-Gilski

  - Year 2018

  Radio is by far one of the most popular and accessible medium. With its availability it attracts listeners all around the world. There are numerous ways of delivering content to consumers. The present situation is characterized by the convergence of acoustics, computer science and telecommunications. This paper reviews the current status of radio broadcasting and streaming services. It describes a subjective study concerning different...

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• Radio Reception Signal

  e-Learning Courses

  • A. Marczak
  • M. Gajewska

• Measurement of Coherence Bandwidth in UHF Radio Channels for Narrowband Networks

  Publication

  • J. Sadowski

  - International Journal of Antennas and Propagation - Year 2015

  This paper presents results of investigation on the coherence bandwidth of narrowband radio channels in 430MHz band. The coherence bandwidth values were estimated froma power delay profile obtained by recording CDMA2000 forward channel signals during real-fieldmeasurements in various environments:mediumcity, flat terrain, and hilly terrain in northern Poland.The results of measurements are compared with characteristic parameters...

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• Towards 5G — Cloud-based Radio Access Networks

  Publication

  • S. Gajewski

  - Zeszyty Naukowe Akademii Marynarki Wojennej - Year 2017

  In the paper a general concept of the 5G network architecture is presented as well as system requirements having impact on innovative solutions in the 5G network are highlighted. A major part of the paper is both presentation and discussion of the problem of Cloud Radio Access Network introduction for public networks in which the cell and resource virtualisation will be implemented. On the other hand, the problem of resource virtualization...

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• Velocity measurement using the fdoa method in ground-based radio navigation system

  Publication

  • J. Sadowski

  - Metrology and Measurement Systems - Year 2014

  Velocity is one of the main navigation parameters of the moving objects. However some systems of position estimation using radio wave measurements cannot provide velocity data due to limitation of their performance. In this paper a velocity measurement method for DS-CDMA radio navigation system is proposed, which doesn’t require full synchronization of reference stations carrier frequencies. The article presents basics of FDOA...

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• Measurement and Analysis of the Radio Wave Polarisation in Off-Body Communications in Indoor Environment

  Publication

  • S. J. Ambroziak
  • R. Katulski
  • L. M. Correia
  • M. Maćkowiak

  - Year 2014

  The paper describes an analysis of the radio wave polarisation in off-body communications in indoor environment. The measurement stand for polarisation measurements has been shortly described. Five investigated scenarios with different body postures and different antenna placements have been characterize. The vertical and horizontal components of received radio signal have been analysed. The measure used in analysis is a ratio...

• Impact of radio wave polarisation on off-body communications in indoor environments

  Publication

  • S. J. Ambroziak
  • L. M. Correia
  • R. Katulski
  • M. Maćkowiak

  - Year 2015

  This paper describes the measurements and the analysis of the impact of radio wave polarisation on off-body communications in Body Area Networks in indoor environments. Measurements on polarisation impact are briefly described. Five investigated scenarios with different body postures and different antenna placements are characterised. The difference between the vertical and horizontal components of the received radio signal are...

• Efficiency of IEEE 802.15.4a UWB Impulse Radio Spectrum Shaping

  Publication

  • J. Sadowski
  • R. Katulski

  - Year 2010

  This paper presents results of impulse radio signal spectrum shaping efficiency investigations. Basic parameters of IEEE 802.15.4a UWB signal and outline of proposed spectrum shaping methods are briefly described. The main part of the paper presents influence of signal and algorithms parameters on the results of spectrum shaping.

• Audio Content and Crowdsourcing: A Subjective Quality Evaluation of Radio Programs Streamed Online

  Publication

  • P. Falkowski-Gilski

  - Year 2023

  Radio broadcasting has been present in our lives for over 100 years. The transmission of speech and music signals accompanies us from an early age. Broadcasts provide the latest information from home and abroad. They also shape musical tastes and allow many artists to share their creativity. Modern distribution involves transmission over a number of terrestrial systems. The most popular are analog FM (Frequency Modulation) and...

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• Hyperbolic Asynchronous Method of a Radio Navigation Technique

  Publication

  • R. Katulski
  • J. Sadowski
  • J. Stefański
  • W. Siwicki

  - Applied Sciences-Basel - Year 2020

  Humans have always wanted to determine position in an unknown environment. At the beginning methods were simple. They were based on the observation of characteristic points, in the case of shipping additional observations of the coastline. Then came navigation based on astronomical methods (astronavigation). At the beginning of the XX-century a new way of determining the current location was developed. It has used radiowave signals....

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• Estimation of transmission quality in cellular systems based on indicators measured by the radio module

  Publication

  • O. Błaszkiewicz
  • R. Burczyk
  • A. Czapiewska
  • M. Gajewska
  • S. Gajewski
  • J. Sadowski

  - Year 2022

  The article presents a measurement stand for testing transmission quality in cellular systems such as LTE, NB-IoT, UMTS and GSM. The results of BLER and throughput measurements for various propagation conditions as well as results of quality indicators appropriate for mentioned technologies measured by commercial radio module are presented. Those measurements were utilized to analyze the possibility of estimating the transmission...

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• Measurements of High-Speed Data Transmission Radio Link for Special Applications

  Publication

  • P. T. Kosz
  • P. Rajchowski
  • K. Cwalina
  • J. Stefański
  • J. Sadowski

  - Year 2017

  In the article measurements of high-speed data transmission radio link for special applications were presented. Build measurement stand, measurement scenario and obtained results were briefly described. All conducted research work took place in real maritime environment.

• Research and analysis of high-speed data transmission radio link designed for maritime environment

  Publication

  • P. T. Kosz
  • P. Rajchowski
  • K. Cwalina
  • J. Sadowski
  • J. Stefański

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2017

  In these article the realization of digital radio link for high-speed data transmission was presented. Its concept and practical realization, using USRP devices from National Instruments, were described. Developed software for generation and reception of digital signals in baseband, including description of modulation types, and time and frequency synchronization mechanisms, was presented. Moreover, an operation of designed radio...

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• Research and Analysis of High-Speed Data Transmission Radio Link Designed for Maritime Environment

  Publication

  • P. Rajchowski
  • K. Cwalina
  • P. T. Kosz
  • J. Stefański
  • J. Sadowski

  - Year 2017

  In these article, the realization of digital radio link for high-speed data transmission was presented. Its concept and practical realization, using USRP devices from National Instruments, were described. Developed software for generation and reception of digital signals in baseband, including description of modulation types, and time and frequency synchronization mechanisms, was presented. Moreover, an operation of designed radio...

• An Empirical Propagation Model for Mobile Radio Links in Container Terminal Environment

  Publication

  • S. J. Ambroziak
  • R. Katulski

  - IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY - Year 2013

  In this paper, a novel empirical propagation model for mobile radio links in a container terminal environment is presented. Measurement propagation research carried out in the Deepwater Container Terminal (DCT) in Gdańsk, Poland is described, and the investigated environment is characterized. The results of the statistical evaluation of the new model are discussed. In addition, statistical tuning of the Walfisch–Ikegami model for...

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• Digital Transformation of Terrestrial Radio: An Analysis of Simulcasted Broadcasts in FM and DAB+ for a Smart and Successful Switchover

  Publication

  • P. Falkowski-Gilski

  - Applied Sciences-Basel - Year 2021

  The process of digitizing radio is far from over. It is an important interdisciplinary aspect, involving Big Data and AI (Artificial Intelligence) when it comes to classifying and handling content, and an organizational challenge in the Industry 4.0 concept. There exist several methods for delivering audio signals, including terrestrial broadcasting and internet streaming. Among them, the DAB+ (Digital Audio Broadcasting plus)...

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• Path Loss Measurements in Wideband Radio Link Designed for Maritime Environment

  Publication

  • P. Rajchowski
  • K. Cwalina
  • P. T. Kosz
  • J. Stefański
  • J. Sadowski

  - Year 2018

  In the article, the research and analysis of path loss in designed and evaluated digital radio link for high-speed data transmission in maritime environment is presented. Collected samples of received signal were used to determine the mean path loss and its standard deviation. Measuring campaign was carried out in a real maritime conditions. The mean value of path loss reached 126 dB on a distance of 11.16 km.

• Performance analysis of data transmission in MC-CDMA radio interface with turbo codes

  Publication

  • A. Marczak

  - TELECOMMUNICATION SYSTEMS - Year 2014

  Multi-carrier code division multiple access (MC-CDMA) technique is a combination of two radio access techniques: CDMA and orthogonal frequency division multiplexing and has the advantages of both techniques. The paper presents the design of transmitter and receiver for MC-CDMA radio interface. It also presents encoders and decoders of turbo codes which were used in simulation of the MC-CDMA technique. Two turbo codes with 8-state...

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• Reception of Terrestrial DAB+ and FM Radio with a Mobile Device: A Subjective Quality Evaluation

  Publication

  • P. Falkowski-Gilski

  - Year 2023

  Nowadays, terrestrial broadcasting enables to receive content anytime and everywhere. People can obtain information both with a portable or desktop receiver, which include pocket-sized devices as well as high-end Hi-Fi equipment, not to mention car audio systems. Numerous manufacturers include FM-compatible chipsets in a variety of user equipment (UE), including mobile phones. However, digital radio signal processing modules, such...

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• DAB vs DAB+ Radio Broadcasting: a Subjective Comparative Study

  Publication

  • P. Falkowski-Gilski

  - Archives of Acoustics - Year 2017

  In the age of digital media, delivering high quality content to consumers is one of the most demanding tasks. There exist numerous broadcasting standards, with different pros and cons, and the DAB/DAB (Digital Audio Broadcasting) system is one of the most popular among them. From an engineer’s perspective, efficient resource management under limited bandwidth conditions has always been a challenge. In this paper a subjective quality...

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• Topics in Companion Animal Medicine

  Journals

  ISSN: 1938-9736 , eISSN: 1946-9837

• DS-CDMA receiver in Software Defined Radio technology. Admission to the implementation of a RAKE receiver

  Publication

  • W. Siwicki
  • J. Stefański

  - Year 2010

  Programmable radio is one of the latest trends in the construction of multi-standard receivers. The technology, called Software Defined Radio (SDR), is also an ideal test platform that allows to try out different algorithms of signal receiving. This particular feature led to choose this platform to implement a DS-CDMA receiver (Direct Sequence Code Division Multiple Access). The use of SDR allows for a gradual upgrade of data processing...

• Design of OFDM-based radio communication systems for coast-to-sea and coast-to-air propagation environments

  Publication

  • S. Gajewski

  - Polish Maritime Research - Year 2016

  In the paper the study of radio communication system design process for systems based on OFDM transmission is considered. The signal propagation model for 1.4 GHz frequency band is discussed, and the study of signal propagation characteristics, important from the point of view of OFDM system design, is presented. The methodology of OFDM interface design is proposed and some characteristics of the OFDM-based radio communication...

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• Implementation of high-speed data transmission technological demonstrator using software defined radio technology

  Publication

  • K. Cwalina
  • P. T. Kosz
  • P. Rajchowski
  • J. Sadowski
  • J. Stefański

  - Year 2017

  In the article implementation of high-speed data transmission technological demonstrator using software defined radio technology is presented. A system architecture design including asymmetric framing transmission organization, which differs from the ones used in cellular systems is described. The construction of technological demonstrator consisting of management unit, radio unit and programmable multithreaded software performing...