TY - GEN
T1 - Optimized concatenated LDPC codes for joint source-channel coding
AU - Fresia, Maria
AU - Perez-Cruz, Fernando
AU - Poor, H. Vincent
PY - 2009
Y1 - 2009
N2 - In this paper a scheme for joint source-channel coding based on low-density-parity-check (LDPC) codes is investigated. Two concatenated independent LDPC codes are used in the transmitter: one for source coding and the other for channel coding, with a joint belief propagation decoder. The asym ptotic behavior is analyzed using EXtrinsic Information Transfer (EXIT) charts and this approximation is corroborated with illustrative experiments. The optimization of the degree distributions for our sparse code to maximize the information transmission rate is also considered.
AB - In this paper a scheme for joint source-channel coding based on low-density-parity-check (LDPC) codes is investigated. Two concatenated independent LDPC codes are used in the transmitter: one for source coding and the other for channel coding, with a joint belief propagation decoder. The asym ptotic behavior is analyzed using EXtrinsic Information Transfer (EXIT) charts and this approximation is corroborated with illustrative experiments. The optimization of the degree distributions for our sparse code to maximize the information transmission rate is also considered.
UR - http://www.scopus.com/inward/record.url?scp=70449460999&partnerID=8YFLogxK
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U2 - 10.1109/ISIT.2009.5205766
DO - 10.1109/ISIT.2009.5205766
M3 - Conference contribution
AN - SCOPUS:70449460999
SN - 9781424443130
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2131
EP - 2135
BT - 2009 IEEE International Symposium on Information Theory, ISIT 2009
T2 - 2009 IEEE International Symposium on Information Theory, ISIT 2009
Y2 - 28 June 2009 through 3 July 2009
ER -