Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)
- 2008.11a
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- Pages.181-184
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- 2008
Studies on Layered Modulation for SVC Signals in DVB-S2 System
- Wang, Yi (Kyung Hee University) ;
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Kim, Seung-Chul
(ETRI) ;
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Lee, Kye-San
(Kyung Hee University) ;
- Sohn, Won (Kyung Hee University)
- Published : 2008.11.08
Abstract
The paper describes a Layered Modulation using the SVC signals and studies the properties of the modulation with respect to several parameters by the computer simulation. The SVC signals will include a base layer signal and an enhancement signal, and the base layer signal is the more important one in its channel robustness. The parameters will include a carrier frequency, a bandwidth, power level, modulation type and code rate. We analyze the demodulating and decoding process of the Layered Modulation system through several scatter plots. And then we discuss the affect of the layer signal power difference to the BER performance, which also proves the base layer signal is more important than the enhancement layer signal.
Keywords