NDLI: Split-Turbo Codes for Nonuniform Sequences

Content Provider	IEEE Xplore Digital Library
Author	Kai Xie Shamir, G.I.
Copyright Year	2007
Description	Author affiliation: Univ. of Utah, Salt Lake City (Kai Xie; Shamir, G.I.)
Abstract	Non-systematic channel encoding can be superior to systematic encoding in the presence of redundancy in the transmitted data. The advantage becomes more significant the higher the channel coding rate is. However, known turbo like codes for this purpose only perform well at low channel coding rates. Furthermore, typical non-systematic codes designed for this problem usually suffer from lack of robustness across various forms of non-uniformity over the transmitted data. We consider a class of non-systematic turbo codes based on splitting redundant data bits into coded bits. Splitting is achieved by cascading an inverse of a sparse matrix with a turbo code. We show encoding and decoding procedures for these codes, and empirically demonstrate their performance with simulation results. The proposed codes exhibit excellent performance in the presence of redundancy, superior to that of systematic codes and many other non-systematic codes. Unlike other non-systematic turbo like codes, they also demonstrate robustness to the non-uniformity of the transmitted data, and excellent performance for various non-uniformities at high channel coding rates.
Starting Page	42
Ending Page	47
File Size	462488
Page Count	6
File Format	PDF
ISBN	1424415632
DOI	10.1109/ITW.2007.4313047
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Redundancy Lakes Turbo codes Robustness Decoding Code standards Sparse matrices Application software Channel coding Gas insulated transmission lines
Content Type	Text
Resource Type	Article

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