상세정보
학술지
ATSC Terrestrial Digital Television Broadcasting Using Single Frequency Networks
- 발행일
- 200404
- 출처
- ETRI Journal, v.26 no.2, pp.92-100
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 03MR1900, 지상파 DTV SFN 송수신 기술개발, 이수인
- 초록
- In this paper, we propose an efficient method to broadcast digital television signals using single frequency networks (SFNs) within the Advanced Television Systems Committee (ATSC) transmission systems. In implementing the SFNs of an 8-vestigial side band (8-VSB) Digital Television (DTV) system, the ambiguity problem of the trellis coder is unavoidable in a conventional ATSC transmission system. We propose a memory initialization of the trellis coder to resolve this ambiguity problem. Since the proposed scheme to synchronize multiple transmitters minimizes the changes from the conventional ATSC system, the hardware complexity for these changes is very low. Our simulation results show that the proposed scheme makes a less than 0.1 dB degradation at the threshold of visibility with a bit error rate of 3×10-6 in the additive white Gaussian noise (AWGN) channel. It is possible to reduce the performance degradation by increasing the initialization period of the proposed scheme.
- KSP 제안 키워드
- Additive white Gaussian noise (AWGN) channel, Advanced television systems committee(ATSC), Bit Error Rate(And BER), Digital television broadcasting, Hardware complexity, Memory initialization, Transmission system, Vestigial side band(VSB), digital television(DTV), multiple transmitters, performance degradation