지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 양경철
- 발행연도
- 2014
- 저작권
- 포항공과대학교 논문은 저작권에 의해 보호받습니다.
이용수0
이 논문의 연구 히스토리 (2)
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
Low density parity-check (LDPC) codes have been shown to approach the Shannon-limit performance when the code length goes to infinify. On the other hand, for moderate code lengths, the error performance can be farther improved by constructing LDPC codes over finite fleld fields GF(q). However, this improvement is achieved at the expense of increased decoding complexity.
In this thesis, we consider the problem of decoding nonbinary LDPC codes over GF(q) with reasonable complexity and good error-rate performance. First, the decoding algorithm with low complexity for nonbinary LDPC codes is proposed, named the weighted symbol reliablity algorithm (WSR) which uses syndrome checking result for measuring reliability of symbol nodes. Second, we analyze the extended min-sum (EMS) algorithm proposed by Declearq and Fossorier. These two approaches provide an effective trade-off between decoding complexity and error-performance, compared with the existing decoding algorithms. We also consider nonbinary LDPC codes conbined with high order QAM in order to apply them to realistic communication systems.
In this thesis, we consider the problem of decoding nonbinary LDPC codes over GF(q) with reasonable complexity and good error-rate performance. First, the decoding algorithm with low complexity for nonbinary LDPC codes is proposed, named the weighted symbol reliablity algorithm (WSR) which uses syndrome checking result for measuring reliability of symbol nodes. Second, we analyze the extended min-sum (EMS) algorithm proposed by Declearq and Fossorier. These two approaches provide an effective trade-off between decoding complexity and error-performance, compared with the existing decoding algorithms. We also consider nonbinary LDPC codes conbined with high order QAM in order to apply them to realistic communication systems.
목차
등록된 정보가 없습니다.
최근 본 자료
댓글(0)
0