METHOD AND APPARATUS FOR HIERARCHICAL MODULATION OF DIGITAL BROADCASTING SYSTEM
摘要
A hierarchical modulation and demodulation method for a digital broadcasting system and an apparatus therefor are provided to enhance transmission efficiency through hierarchical modulation in a currently operated system. An RS(Reed-Solomon) coder(602) encodes the first broadcasting signal. A byte interleaver(605) interleaves the encoded first broadcasting signal. A convolution coder(607) encodes the interleaved first broadcasting signal again. A bit interleaver(609) interleaves the encoded first broadcasting signal. A second coder(617) encodes the second broadcasting signal. A second bit interleaver interleaves the encoded second broadcasting signal. A CDM(Code Division Multiplexing) multiplexer(611) multiplexes the first broadcasting signal and the second broadcasting signal outputted from the first bit interleaver and the second bit interleaver. A hierarchical modulator(613) hierarchically modulate the modulated signal by an 8PSK(8 Phase Shift Keying) type.
申请公布号
KR20080052201(A)
申请公布日期
2008.06.11
申请号
KR20070048615
申请日期
2007.05.18
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE;SK TELECOM. CO., LTD.
发明人
KIM, TAE HOON;LEE, IN KI;CHOI, SEUNG HYUN;OH, CHEON IN;CHANG, DAE IG;LEE, HO JIN;LEE, SUNG HOON;LEE, GOON SEOP;LEE, DONG HAHK;YU, JAE HWANG