NDLI: High-rate punctured convolutional self-doubly orthogonal codes for iterative threshold decoding

Content Provider	IEEE Xplore Digital Library
Author	Haccoun, D. Cardinal, C.
Copyright Year	1972
Abstract	The puncturing technique allows obtaining high-rate convolutional codes from low-rate convolutional codes used as mother codes. This technique has been successfully applied to generate good high-rate convolutional codes which are suitable for Viterbi and sequential decoding. In this paper, we investigate the puncturing technique for convolutional self-doubly orthogonal codes (CSO/sup 2/C) which are decoded using an iterative threshold-decoding algorithm. Based on an analysis of iterative threshold decoding of the rate-R=b/(b+1) punctured systematic CSO/sup 2/C, the required properties of the rate-R=1/2 systematic convolutional codes (SCCs) used as mother codes are derived. From this analysis, it is shown that there is no need for the punctured mother codes to respect all the required conditions, in order to maintain the double orthogonality at the second iteration step of the iterative threshold-decoding algorithm. The results of the search for the appropriate rate-R=1/2 SCCs used as mother codes to yield a large number of punctured codes of rates 2/3/spl les/R/spl les/6/7 are presented, and some of their error performances evaluated.
Starting Page	55
Ending Page	63
Page Count	9
File Size	523140
File Format	PDF
ISSN	00906778
Volume Number	53
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Convolutional codes Iterative decoding Iterative algorithms Viterbi algorithm Algorithm design and analysis Performance evaluation Information theory Communications Society Councils Convergence threshold decoding convolutional self-doubly orthogonal codes (CSO iterative threshold decoding punctured codes
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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