NDLI: Rate-Compatible Insertion Convolutional Turbo Codes: Analysis and Application to LTE

Content Provider	IEEE Xplore Digital Library
Author	Breddermann, T. Vary, P.
Copyright Year	2002
Abstract	Rate-compatible channel codes are commonly used in mobile communication systems to adapt the protection against transmission errors to the varying channel conditions. In the LTE radio system, e.g., the code rate adaptation is carried out based on a fixed-rate mother Turbo code by means of bit puncturing and bit repetition. However, lower code rates can alternatively be provided by \gls{IC} Turbo codes. In RCIC Turbo codes, known bits (dummy bits) are inserted into the information bit sequence during Turbo encoding, providing perfect \apri knowledge to the mother decoder. In this contribution, a detailed analysis of RCIC Turbo codes is provided. It will be shown that these codes outperform rate-compatible Turbo codes using bit repetition in terms of frame error rate and convergence speed. Furthermore, their EXIT charts will be derived from the EXIT chart of the mother Turbo code. This EXIT chart analysis enables a novel semi-analytical optimization tool for RCIC Turbo codes and the efficient EXIT chart comparison of competing codes, avoiding complex simulations. Finally, a HARQ scheme for LTE, based on RCIC Turbo codes, is presented which achieves a considerably higher system throughput compared to the standard LTE solution.
Starting Page	1356
Ending Page	1366
Page Count	11
File Size	629220
File Format	PDF
ISSN	15361276
Volume Number	13
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turbo codes Convolutional codes Decoding Vectors Systematics Error analysis Signal to noise ratio LTE Convolutional turbo codes
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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