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The Limitation of Primary Signals Entering DVB-T On-Channel-Repeater Working in SFN Network

Marek Dvorsky, Libor Michalek, Martin Tomis, Rudolf Medula

DOI: 10.15598/aeee.v11i6.868


Abstract

This paper considers an issue of signal coverage in uncovered places using a broadcasting device called a Gap Filler. The main focus is placed on the analysis of potential negative effects while signals from two and more primary transmitters simultaneously enter to the Gap Filler. In particular, in the measurements the impact of reception cross delayed signals received by the Gap Filler from two adjacent primary transmitters operating in the Single Frequency Network was analysed. The influence of different receive signal levels from two adjacent primary transmitters was also examined. In the conclusion, based on the experiments, the limiting factors useful for individual transmitters in the Single Frequency Network were determined. The analysis and finding the limit parameters can help bradcasters in further setting and debugging of the Gap Filler network. Finally, the described laboratory experiment was also verified under the real SFN network condition in border region Vsetinsko to verify the laboratory findings.

Keywords


DVB-T; Gap Filler; MER; on-channel-repeater; SFN; signal delay.

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