TY - JOUR
T1 - A memory access decreased decoding scheme for double binary convolutional turbo code
AU - Zhan, Ming
AU - Wu, Jun
AU - Zhou, Liang
AU - Zhou, Zhenyu
PY - 2013/8
Y1 - 2013/8
N2 - To decrease memory access of the decoder for double binary convolutional turbo code (DB CTC), an iterative decoding scheme is proposed. Instead of accessing all of the backward state metrics from the state metric cache (SMC), a part of them is computed by the recalculation unit (RU) in the forward direction. By analysis and simulations, both the amount of memory access and the size of SMC are reduced by about 45%. Moreover, combined with the scaling technique, the proposed scheme gets decoding performance near to that of the well-known Log-MAP algorithm.
AB - To decrease memory access of the decoder for double binary convolutional turbo code (DB CTC), an iterative decoding scheme is proposed. Instead of accessing all of the backward state metrics from the state metric cache (SMC), a part of them is computed by the recalculation unit (RU) in the forward direction. By analysis and simulations, both the amount of memory access and the size of SMC are reduced by about 45%. Moreover, combined with the scaling technique, the proposed scheme gets decoding performance near to that of the well-known Log-MAP algorithm.
KW - Backward state metrics
KW - DB CTC
KW - Recalculation
KW - SMC
UR - http://www.scopus.com/inward/record.url?scp=84881499770&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881499770&partnerID=8YFLogxK
U2 - 10.1587/transfun.E96.A.1812
DO - 10.1587/transfun.E96.A.1812
M3 - Article
AN - SCOPUS:84881499770
SN - 0916-8508
VL - E96-A
SP - 1812
EP - 1816
JO - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
JF - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
IS - 8
ER -