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    • 5. 发明公开
    • 소스-채널 결합 부호화 방법 및 이를 적용한 위성 방송 시스템
    • 源信道协调编码方法和使用该方法的卫星广播系统
    • KR1020110061309A
    • 2011-06-09
    • KR1020090117918
    • 2009-12-01
    • 한국전자통신연구원
    • 이인기장대익서광덕지원섭
    • H04N7/20H04N7/015
    • H04N7/20H04H20/51H04H20/74H04H40/90
    • PURPOSE: A source-channel combination method and satellite broadcasting system applying the same are provided to effectively solve a damp problem without changing the structure of a system. CONSTITUTION: A source-channel combination method includes as follows: a step of checking whether a channel SNR(Signal-Noise ratio) has changed(S43); a step of selecting MODCOD suitable for the channel SNR(S46); a step of calculating a source encoding rate by using valid information bit rate per unit symbol of the selected MODCOD(S47); a step of extracting and packetizing a NAL(Network Astraction Layer) unit(S50); a step of configuring a BB(Baseband) frame by bounding packet(S51); a step of encoding and modulating a BB frame(S52).
    • 目的:提供一种源通道组合方法和应用该方法的卫星广播系统,以有效解决潮湿问题,而不改变系统的结构。 构成:源通道组合方法包括以下步骤:检查信道SNR(信噪比)是否已改变的步骤(S43); 选择适合于信道SNR的MODCOD的步骤(S46); 通过使用所选MODCOD的每单位符号的有效信息比特率来计算源编码率的步骤(S47); 提取和打包NAL(网络抽象层)单元的步骤(S50); 通过边界分组配置BB(基带)帧的步骤(S51); 编码和调制BB帧的步骤(S52)。