Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding
Zhao, Xuying1,2; Wang, Xiaoqin2; Wang, Donglin2
2017-10
会议名称International Conference on Mechatronics and Intelligent Robotics (ICMIR2017)
会议录名称Recent Developments in Mechatronics and Intelligent Robotics
页码30-35
会议日期May 20-21, 2017
会议地点Kunming, China
摘要This 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.

关键词Crc Check Second Order Difference Turbo Decoding
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/15519
专题国家专用集成电路设计工程技术研究中心
通讯作者Zhao, Xuying
作者单位1.中国科学院大学
2.中国科学院自动化研究所
推荐引用方式
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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