TY - GEN
T1 - Size compatible (SC)-array LDPC codes
AU - Abematsu, Daisuke
AU - Ohtsuki, Tomoaki
AU - Jarot, Sigit P.W.
AU - Kashima, Tsuyoshi
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Array low density parity check (LDPC) codes are high-rate codes that can achieve good error rate performance in additive white Gaussian noise (AWGIS) channels. However, array LDPC codes do not support arbitrary code lengths, because the code length of an array LDPC code with good error rate performance is limited to a multiple of a prime number. This paper proposes Size Compatible (SC)-array LDPC codes; they achieve good error rate performance while supporting arbitrary code lengths. We conduct computer simulations to evaluate the block error rate (BLER) performance of SC-array LDPC codes in AwGN channels. We also evaluate the corresponding performance of SC-array LDPC coded multiband OFDM systems for data transmission rates over 1 Gbps in the UWB multipath channel model CM 3. We show that if the submatrix size is a nonprime number, SC-array LDPC codes achieve better error rate performance than the conventional array LDPC codes in AWGN channels. We also show that the SC-array LDPC codes achieve better error rate performance than the punctured array LDPC codes in AWGN channels. We also show that if the submatrix size is a prime number, SC-array LDPC codes achieve the same error rate performance as conventional array LDPC codes in AWGN channels. Moreover, we show that for multiband OFDM systems with data transmission rates of over 1 Gbps, SC-array LDPC codes achieve better error rate performance than conventional array LDPC codes.
AB - Array low density parity check (LDPC) codes are high-rate codes that can achieve good error rate performance in additive white Gaussian noise (AWGIS) channels. However, array LDPC codes do not support arbitrary code lengths, because the code length of an array LDPC code with good error rate performance is limited to a multiple of a prime number. This paper proposes Size Compatible (SC)-array LDPC codes; they achieve good error rate performance while supporting arbitrary code lengths. We conduct computer simulations to evaluate the block error rate (BLER) performance of SC-array LDPC codes in AwGN channels. We also evaluate the corresponding performance of SC-array LDPC coded multiband OFDM systems for data transmission rates over 1 Gbps in the UWB multipath channel model CM 3. We show that if the submatrix size is a nonprime number, SC-array LDPC codes achieve better error rate performance than the conventional array LDPC codes in AWGN channels. We also show that the SC-array LDPC codes achieve better error rate performance than the punctured array LDPC codes in AWGN channels. We also show that if the submatrix size is a prime number, SC-array LDPC codes achieve the same error rate performance as conventional array LDPC codes in AWGN channels. Moreover, we show that for multiband OFDM systems with data transmission rates of over 1 Gbps, SC-array LDPC codes achieve better error rate performance than conventional array LDPC codes.
UR - http://www.scopus.com/inward/record.url?scp=47649090544&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=47649090544&partnerID=8YFLogxK
U2 - 10.1109/VETECF.2007.248
DO - 10.1109/VETECF.2007.248
M3 - Conference contribution
AN - SCOPUS:47649090544
SN - 1424402646
SN - 9781424402649
T3 - IEEE Vehicular Technology Conference
SP - 1147
EP - 1151
BT - 2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
T2 - 2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
Y2 - 30 September 2007 through 3 October 2007
ER -