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Laboratory Workplace To Measure Dvb-T2 Miso Signal
Bárta, Vojtěch
This article presents a laboratory workplace to measure DVB-T2 MISO signal under laboratory conditions. The performance of DVB-T2 MISO signal influenced by different transmission conditions can be evaluated in terms of the most commonly used objective parameters, like BER before and after channel decoding and MER. Functionality of the proposed concept and the adopted measurement methodology are verified by a set of experimental measurements.
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Coexistence of wireless systems LoRa and Bluetooth
Paul, Filip ; Kratochvíl, Tomáš (oponent) ; Polák, Ladislav (vedoucí práce)
This bachelor thesis focuses on the coexistence between LoRa and Bluetooth technologies in the unlicensed 2.4 GHz ISM band. The thesis consists from two main parts, namely theoretical and experimental. The theoretical part describes the physical layer and defines coexistence scenarios between both systems. The experimental part is intended to the design and realization of measuring testbed to measure different coexistence scenarios, which may occur between LoRa and Bluetooth systems, in the 2.4 GHz ISM band, including the processing of measured data. Finally, based on the results obtained from measurements, a laboratory task is proposed for educational purposes for the course mobile communication taught at BUT university.
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Odhad pokrytí signálem mobilní sítě prostřednictvím regrese
Walach, Dominik ; Raida, Václav (oponent) ; Blumenstein, Jiří (vedoucí práce)
Tato diplomová práce se zabývá využitím volně dostupných datových sad k odhadu síly signálu v lokalitách, kde měření chybí. Cílem bylo za pomoci interpolačních a regresních metod co nejpřesněji odhadnout možné pokrytí signálem v dané lokalitě. Nejdříve byly analyzované datové sady, na jejichž základě byl vytvořen testovací model různých metod. Metody s nejlepšími výsledky byly implementovány na reálných datových sadách obsahujících tisíce měření. V závěru je okomentována problematika přesných odhadů a jsou specifikovány okolnosti pro snížení odchylky naměřené a vypočítané hodnoty.
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Coexistence Of LTE And WLAN In The ISM Band
Mikláš, Michal
This paper deals with definition, description and measurement of coexistence scenarios, which can occur between LTE and IEEE 802.11g wireless communication systems in the ISM 2.4 GHz band. There are defined common RF frequency bands for both systems and coexistence scenarios which can arise between them. An appropriate measurement workplace and setup is proposed to measure the interaction between LTE and IEEE 802.11g. The rightness of the proposed measurement setup is verified by experimental laboratory measurements.
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Coexistence Between Lte And Lora Systems In The 24 Ghz Ism Band
Potočňak, Martin
This work deals with the study of coexistence scenarios that can occur between wireless systems LTE and LoRa in the 2.4 GHz ISM band. For this purpose an appropriate measurement setup is proposed and realized. The proposed concept enables to provide automatic measurements of the considered coexistence scenarios. It is achieved by the connection of the measurement devices with a switch, a personal computer (PC) and software MATLAB. Functionality of the realized measurement setup is verified by experimental measurements.
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Coexistence Between Dvb-T2 And Lte Systems In The 800 Mhz Band – A Measurement Methodology
Walach, Dominik
This article deals with the study of coexistence between DVB-T2 and LTE systems. Coexistence scenario between DVB-T2 and LTE systems in the 800 MHz UHF band is defined. Next, a laboratory workplace is realized, and a measurement methodology is proposed. Its functionality is verified by experimental measurements. The proposed concept also facilitates to test sensitivity of DVB-T2 receivers (set-top-boxes) against interfering LTE signals.
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Měření a analýza vlastností systému DAB
Kaštánek, Petr ; Kufa, Jan (oponent) ; Polák, Ladislav (vedoucí práce)
Tato bakalářská práce se zabývá měřením a analýzou signálu Digital Audio Broadcasting (DAB). V teoretické části práce se nachází stručný popis vysílacího řetězce DAB. Pozornost je věnována zejména fyzické vrstvě systému DAB. V experimentální části práce je navrženo a realizováno laboratorní měřící pracoviště pro příjem, zpracování a vyhodnocení DAB signálu, jehož základem je SDR přijímač RTL2832U. Funkčnost navržené koncepce je ověřena podrobným měřením vlastností systému DAB.
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Laboratorní pracoviště pro měření DVB-T2 MISO vysílání
Bárta, Vojtěch ; Kratochvíl, Tomáš (oponent) ; Polák, Ladislav (vedoucí práce)
Tato bakalářská práce se zabývá měřením a analýzou DVB-T2 MISO vysílání. V teoretické části práce je popsán vysílací řetězec systému DVB-T2 na úrovni fyzické vrstvy. Pozornost je věnována pro oba SISO a MISO vysílací módy. V experimentální části práce je navrženo a realizováno vhodné měřící pracoviště pro monitorování a analýzu DVB-T2 MISO vysílání v laboratorních podmínkách. Funkčnost navržené koncepce a zvolená měřící metodika byla ověřena sadou experimentálních měření.
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Coexistence of LoRa and Wi-Fi in the RF band 2.4 GHz
Kaučiarik, Filip ; Miloš, Jiří (oponent) ; Polák, Ladislav (vedoucí práce)
This diploma thesis deals with the study of coexistence that can occur between the LoRa and Wi-Fi systems in the non-licensed 2.4 GHz ISM band. The theoretical part of this thesis focuses on the description of the physical (PHY) layer of both systems. There are also defined coexistence scenarios that can occur between LoRa and Wi-Fi systems in common radiofrequency (RF) bands. In the experimental part of this thesis, an appropriate laboratory workplace is proposed and realized to measure different coexistence scenarios between LoRa and Wi-Fi. The functionality of the proposed concept and the adopted measurement methodology are verified by a set of experimental measurements. Measurement results are evaluated and discussed in detail. Finally, a laboratory work for education purposes in the Laboratory of Mobile and Wireless Communications is prepared.
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Coexistence of LTE and LoRa in the 2.4 GHz ISM band
Potočňak, Martin ; Staněk, Miroslav (oponent) ; Polák, Ladislav (vedoucí práce)
This diploma thesis deals with the study and measurement of coexistence scenarios that can occur between the LTE and LoRa systems in the unlicensed ISM band 2.4 GHz. A common radio frequency band in which LTE and LoRa systems can coexist is defined. An appropriate laboratory measurement is proposed and realized, allowing automatized measurement of the defined coexistence scenarios. For this purpose, a personal computer, professional measurement equipment and software MATLAB are utilized. Functionality of the proposed concept is verified by extensive measurements. The obtained results are graphically shown and discussed in detail.
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