TY - GEN
T1 - On construction of concatenated low-density generator matrix codes
AU - Kumano, Yusuke
AU - Ohtsuki, Tomoaki
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Low-density generator-matrix (LDGM) codes have advantages - fast encoding and parallel decoding, however the performance of the LDGM code is asymptotically bad. This problem can be solved by concatenating two LDGM codes serially. However, little is known about the construction of the concatenated LDGM codes - component LDGM codes, the combination of inner and outer coding rates, inner and outer code weights. In this paper, we investigate the parity check matrix of component LDGM codes that suited to concatenated LDGM codes. We also investigate appropriate combination of inner and outer coding rates and inner and outer code weights, and so on. In addition, we investigate how to set the maximum number of inner and outer iterations for concatenated LDGM codes. Our results are useful for the construction of concatenated LDGM codes.
AB - Low-density generator-matrix (LDGM) codes have advantages - fast encoding and parallel decoding, however the performance of the LDGM code is asymptotically bad. This problem can be solved by concatenating two LDGM codes serially. However, little is known about the construction of the concatenated LDGM codes - component LDGM codes, the combination of inner and outer coding rates, inner and outer code weights. In this paper, we investigate the parity check matrix of component LDGM codes that suited to concatenated LDGM codes. We also investigate appropriate combination of inner and outer coding rates and inner and outer code weights, and so on. In addition, we investigate how to set the maximum number of inner and outer iterations for concatenated LDGM codes. Our results are useful for the construction of concatenated LDGM codes.
UR - http://www.scopus.com/inward/record.url?scp=47349098651&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=47349098651&partnerID=8YFLogxK
U2 - 10.1109/PACRIM.2007.4313269
DO - 10.1109/PACRIM.2007.4313269
M3 - Conference contribution
AN - SCOPUS:47349098651
SN - 1424411904
SN - 9781424411900
T3 - IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings
SP - 442
EP - 445
BT - 2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, Conference Proceedings, PACRIM
T2 - 2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, PACRIM
Y2 - 22 August 2007 through 24 August 2007
ER -