Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Analysis of Receiving Performance for DVB-S2 Transmission System: BC Mode

DVB-S2 전송시스템의 수신성능 분석: BC 모드

  • Published : 2007.01.29
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Abstract

We analyzed the receiving performance of the DVB-S2 transmission system in the BC(Backward Compatibility) mode. The transmitter employs the hierarchical modulation, and the receiver can be implemented by the direct demodulation or the hierarchical demodulation. The performance of each demodulation scheme is analyzed by a statistical method and a computer simulation for the AWGN and nonlinear channels. The ratio of the LP/HP streams which is proper in the domestic satellite broadcasting environments, is also suggested.

이 연구는 DVB-S2 전송시스템의 수신성능을 BC(Backward Compatibility) 모드에서 분석하였다. 송신기는 DVB-S(HP)와 DVB-S2(LP) 스트림을 계층적 비균등 8PSK로 변조시킨 신호를 전송하며, 수신기는 계층적 변조 신호를 복조하기 위하여 LSB에서 MSB 순으로 복조하는 방식과 사분면 추정지수와 LLR 계산기를 이용한 계층적 복조방식을 적용할 수 있다. 두 복조방식에 대한 성능분석을 AWGN 및 비선형 채널에서 통계적 분석과 모의실험을 통하여 수행하였으며 이 결과를 바탕으로 국내위성방송 환경에 적합한 LP/HP 스트림 비율을 제시하였다.

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References

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