Title :
LDPC codes for unequal error protection
Author :
Xuehong, Lin ; Weiling, Wu
Author_Institution :
Dept. of Inf. Eng., Beijing Univ. of Posts & Telecommun., China
fDate :
31 Aug.-4 Sept. 2004
Abstract :
This paper proposed LDPC codes with lower triangular parity check and the modified decoding algorithm, which can achieve unequal error protection for transmission bitstream with different level of protection. It is well suitable for transmitting the important sequence in front of codeword, such as wavelet-based image codecs.
Keywords :
cyclic codes; decoding; matrix algebra; parity check codes; LDPC codes; belief propagation algorithm; decoding algorithm; lower triangular parity check; quasicyclic codes; unequal error protection; wavelet-based image codecs; AWGN; Bipartite graph; Decoding; Error correction codes; Hydrogen; Image coding; Linear matrix inequalities; Parity check codes; Speech codecs; Speech coding;
Conference_Titel :
Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on
Print_ISBN :
0-7803-8406-7
DOI :
10.1109/ICOSP.2004.1441685
