LDPC Decoding Algorithm for Multi-level Modulation Scheme

....................................................................... ii Nomenclature ................................................................. iii 제 1 장 서 론 ......................................................... 1 제 2 장 DVB-S2 기반 LDPC 부복호 알고리즘 .....................3 2.1 DVB-S2 기반 부호화 과정 ................................. 3 2.2 DVB-S2 기반 LDPC 복호 알고리즘 ..................... 9 2.3 QPSK 변조방식에서 성능분석 ..............................13 제 3 장 8PSK와 결합한 LDPC 복호 알고리즘.................... 14 3 .1 Euc l id ian 거리를 이용한 복호방식 ............15 3.2 Sector를 이용하는 복호방식 ..............................17 3.3 인터리버 설정에 따른 성능분석........................ 21 3.4 BC mode에서 8PSK용 LDPC부호 성능분석............24 제 4 장 결 론............................................................30 참고문헌 ..................................................................... 32

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