Wyniki wyszukiwania - Biblioteka Nauki

1

Computer Aided Planning of WLAN Access Networks

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Pluta S. , Pluta J.

International Journal of Electronics and Telecommunications

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2020

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tom Vol. 66, No. 1

161--166

EN

An Internet application was developed to support the design process of the WLAN access network. The whole program was designed as a desktop application using the following languages: HTML, CSS and JavaScript. The main task of the application facilitates the planning process of the WLAN access network, including the location of multiple base stations. There is an example of using the program in the WLAN network planning process. The main purpose of this application as the ability to carry out network planning using multiple base stations and provide radio coverage for the entire area served by Wireless Internet Service Provider, is obtained.

2

Badanie pokrycia radiowego w bezprzewodowej sieci kampusowej

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Pluta S. , Grytz M.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2019

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tom nr 9

752--755

PL

Przedstawiono wyniki prac badawczych prowadzonych w celu oceny prawidłowości planowania kampusowej sieci WLAN Politechniki Opolskiej, realizującej usługę Eduroam. Wykonano pomiary stopnia pokrycia budynku sygnałem radiowym, generowanym przez rzeczywistą sieć WLAN w warunkach terenowych II Kampusu PO.

EN

The article presents the results of research conducted in order to asses quality of campus wireless area network planning for Eduroam service. Measurements of the degree of coverage of the building with a radio signal generated by the actual WLAN network in the field conditions of the 2nd Campus of The Opole University of Technology were carried out.. Examinations of the coverage were carried out in an indoor environment and outdoor environment. The WLAN network is well designed, and the place of installation of access points allows favorable propagation of radio waves, also in classrooms separated by a wall, with an acceptable reduction of the radio signal level.

3

Properties of a Wireless Mesh Network Constructed with the Use of IQRF Modules in the Indoor Environment

100%

Pluta S. , Roszkowski P.

International Journal of Electronics and Telecommunications

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2020

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tom Vol. 66, No. 3

537--544

EN

The subject of the article is the design and practical implementation of the wireless mesh network. IQRF radio modules were used for the network design. The IQRF® technique has enabled the construction of a mesh network with the possibility of reconfiguration. The theoretical part contains a description of the IQRF® hardware solutions used. The practical scope includes the design part, where the configuration of the radio modules was carried out and the parameters of the radio network were set to allow its implementation in various topologies. Then, a wireless network consisting of 10 IQRF modules was launched in the P3 building of the Opole University of Technology. At this stage, configured radio modules were placed in selected rooms on all five floors of the building in order to carry out tests of the radio network constructed in this way. The tests included measuring the packet transmission delay time as well as the received signal strength. Research was carried out for several network topologies.

4

Analysis of a novel FPGA-based system for filtering audio signals using a finite impulse response filters

80%

Lipowski A. , Majewski P. , Pluta S.

International Journal of Electronics and Telecommunications

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2022

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tom Vol. 68, No. 1

19--26

EN

In this article, an analysis of an innovative system for filtering signals in the audible range (16 Hz - 20 kHz) on programmable logic devices using a filters with a finite impulse response, is presented. Mentioned system was neat combination of software and hardware platform, where in the program layer a multiple programming languages including VHDL, JavaScript, Matlab or HTML were used to create completely useful application. To determine the coefficients of polynomial filters the Matlab Filter Design & Analysis Tool was used. Thanks to the developed graphic layer, a user-friendly interface was created, which allows easily transfer the required coefficients from the computer to the executive system. The practical implementation made on the FPGA platform, specifically on the Altera DE2- 115 development kit with the FPGA Cyclone IV, was compared with simulation realization of Matlab FIR filters. The performed research confirm the effectiveness of filtration in real time with up to 128th order of the filter for both audio channels simultaneously in FPGA-based system.

5

Realizacja bezprzewodowej sieci sensorycznej z wykorzystaniem technologii IQRF

80%

Pluta S. , Roszkowski P. , Antończyk P.

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2020

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tom nr 7-8

300-305, CD

PL

Przedmiotem artykułu jest opis zastosowania platformy IQRF® do wdrożenia bezprzewodowej sieci typu WSN. Technika IQRF® umożliwiła budowę sieci sensorowej z możliwością rekonfiguracji. Część teoretyczna zawiera opis zastosowanych rozwiązań sprzętowych IQRF®. Zakres praktyczny obejmuje opis projektu sieci WSN wdrożonej w budynku P3 Politechniki Opolskiej. Uruchomiono sieć bezprzewodową składającą się z 10 modułów IQRF®. Skonfigurowane moduły radiowe zostały umieszczone w wybranych pokojach na wszystkich pięciu kondygnacjach budynku w celu przeprowadzenia testów. Testy obejmowały pomiar czasu opóźnienia transmisji pakietu z danymi pomiarowymi oraz poziomu RSSI.

EN

The subject of the article is a description of the use of the IQRF® platform to implement a wireless WSN network. IQRF® technology has enabled the construction of a sensor network with the possibility of reconfiguration. The theoretical part contains a description of the IQRF® hardware solutions used. The practical scope includes the description of the WSN network project implemented in building P3 of the Opole University of Technology. A wireless network consisting of 10 IQRF® modules was launched. The configured radio modules were placed in selected rooms on all five floors of the building for testing. Tests included measuring the transmission delay time of the measurement data package and the RSSI level.