Efficient Cyclic Redundancy Checks for Turbo Coding

F. Zhai and I.J. Fair (Canada)

Keywords

Turbo codes, CRC, error detection.

Abstract

Turbo codes mark one of the most important developments in coding theory. The systematic component of a terminated recursive systematic convolutional code used as a constituent code in turbo codes provides a built-in cyclic redundancy check (CRC). In this paper we show that this built-in CRC can be used in conjunction with an external CRC to reduce the redundancy required for error detection or enhance error detection performance.

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