Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding

	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
第一作者单位	中国科学院自动化研究所
通讯作者单位	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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