CASIA OpenIR  > 国家专用集成电路设计工程技术研究中心
Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding
Zhao, Xuying1,2; Wang, Xiaoqin2; Wang, Donglin2
2017-10
Conference NameInternational Conference on Mechatronics and Intelligent Robotics (ICMIR2017)
Source PublicationRecent Developments in Mechatronics and Intelligent Robotics
Pages30-35
Conference DateMay 20-21, 2017
Conference PlaceKunming, China
AbstractThis paper presents an enhanced CRC (Cyclic Redundancy Check)
check stopping criterion to improve the throughput of turbo decoders. Turbo
decoder is applied to the 3G and LTE systems. CRC check stopping criterion is
normally used by the turbo decoder, and it reduces the iteration times dramatically
when transmission blocks are received correctly. However, when the quality of
the received signals is very low, the receiving data cannot be decoded correctly
even though the turbo decoder keeps working all the time. In these scenarios, the
CRC check stopping criterion has no effects any more. To reduce the number of
iterations when the quality of the received signals is low, the second order differ‐
ence aided CRC check stopping criterion is proposed. Based on the second order
difference of soft-bit information and/or hard-bit information, some bad situations
are identified before CRC check stopping condition is satisfied. Through simu‐
lations, it is proved that this method greatly reduces the decoding iteration times
in bad transmission environments. On the other hand, the whole throughput of
the turbo decoder is improved.

KeywordCrc Check Second Order Difference Turbo Decoding
Document Type会议论文
Identifierhttp://ir.ia.ac.cn/handle/173211/15519
Collection国家专用集成电路设计工程技术研究中心
Corresponding AuthorZhao, Xuying
Affiliation1.中国科学院大学
2.中国科学院自动化研究所
Recommended Citation
GB/T 7714
Zhao, Xuying,Wang, Xiaoqin,Wang, Donglin. Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding[C],2017:30-35.
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