Sökning: "DVB"

Visar resultat 1 - 5 av 24 uppsatser innehållade ordet DVB.

  1. 1. Characterisation and Modeling of RF environment

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Patric Beas Petersson; [2022]
    Nyckelord :signal processing; passive radar; antenna array; data processing; signalbehandling; passiv radar; antennarray; databehandling;

    Sammanfattning : Devices that transmit and receive electromagnetic signals are today central to the way people communicate and acquire information from the surroundings. WiDAR, Wideband Digital Array Receiver, is the name of a new system of digital antenna array receivers, which has recently been developed at Saab in Järfälla and is the focus of this thesis. LÄS MER

  3. 2. Development of an analytical method for the screening of meaty flavors in commercial foodstuff by SPME-GC/O-MS

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Ioannis Protopappas; [2021]
    Nyckelord :Gass Chromatography; Mass spectrometry; Meaty flavors; Aromas; Solid pahse microextraction; Mallaird; Lipid degradation; Food technology; Agriculture and Food Sciences;

    Sammanfattning : The aim of the project was to develop a methodology for the chromatographic analysis able to identify the key odorants in meaty food products. The approach was based on the analysis of an already in market product and the theoretical background of the meaty flavors sensorially. LÄS MER

  4. 3. Analysis of new and alternative encryption algorithms and scrambling methods for digital-tv and implementation of a new scrambling algorithm (AES128) on FPGA.

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik; Linköpings universitet/Tekniska högskolan

    Författare :Gustaf Bengtz; [2014]
    Nyckelord :DVB; scrambling; CISSA; cipher; CSA; CSA3; AES128; FPGA;

    Sammanfattning : This report adresses why the currently used scrambling standard CSA needs a replacement. Proposed replacements to CSA are analyzed to some extent, and an alternative replacement (AES128) is analyzed. One alternative being the CSA3, and the other being the CISSA algorithm. Both of the proposed algorithms use the AES algorithm as a base. LÄS MER

  5. 4. IP Multicasting over DVB-T/T2/H and eMBMS using PARPS : Effect of the number of transmitters

    Master-uppsats, Avdelningen för informations- och kommunikationssystem

    Författare :Ranjith Reddy Voladri; [2013]
    Nyckelord :Unicasting; Broadcasting; Multicasting; DVB-T T2; DVB-H; eMBMS; SFN; MFN; DSFN; PARPS; SSE; MSSE; PARPS; LTE; Coverage probability; Zip-f law; Radio resource management.;

    Sammanfattning : With the advancement in the current wireless technology standards such as terrestrial digital video broadcasting systems (DVB-T, DVB-T2, and DVB-H) and the massive usage of the Internet over mobile devices, streaming of television channels in smart phones has become a necessary advancement for mobile users. As, UMTS dominating the entire mobile market globally and with the evolution of LTE, several mobile operators are working on an MBMS framework which will help to launch mobile TV services on respective operators. LÄS MER

  7. 5. Extraction of radio frequency quality metric from digital video broadcast streams by cable using software defined radio

    Master-uppsats, Kommunikationssystem; Tekniska högskolan

    Författare :Viktor Eriksson; [2013]
    Nyckelord :QAM; DVB-C; MER; BER; Gardner; Phase locked loop; Mueller Muller; RRC-filter; Carrier recovery; Timing Recovery; Matched filtering;

    Sammanfattning : The purpose of this master thesis was to investigate how effiecient the extractionof radiofrequency quality metrics from digital video broadcast (DVB) streamscan become using software defined radio. Software defined radio (SDR) is a fairlynew technology that offers you the possibility of very flexible receivers and transmitters where it is possible to upgrade the modulation and demodulation overtime. LÄS MER