Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding

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	Second Order Difference Aided CRC Check Stopping Criterion for Turbo Decoding
	Zhao, Xuying1,2 ; Wang, Xiaoqin2 ; Wang, Donglin2
	2017-10
会议日期	May 20-21, 2017
会议地点	Kunming, China
关键词	Crc Check Second Order Difference Turbo Decoding
页码	30-35
英文摘要	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.
会议录	Recent Developments in Mechatronics and Intelligent Robotics
内容类型	会议论文
源URL	[http://ir.ia.ac.cn/handle/173211/15519]
专题	自动化研究所_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]. 见:. Kunming, China. May 20-21, 2017.