Improving 3-dimensional turbo codes using 3GPP2 interleavers

Kbaier Ben Ismail, Dhouha; Douillard, C. and Kerouedan, S. (2010). Improving 3-dimensional turbo codes using 3GPP2 interleavers. In: 2009 First International Conference on Communications and Networking, IEEE pp. 1–7.

DOI: https://doi.org/10.1109/COMNET.2009.5373557

Abstract

This paper deals with the performance improvement of a 3-dimensional turbo code based on the partial concatenation of the 3GPP2 code with a rate-1 post-encoder. First, we optimize the distance spectrum of the 3-dimensional 3GPP2 turbo code by means of the adoption of a non regular post-encoding pattern. This allows us to increase the minimum Hamming distance and thereby to improve the performance at very low error rates. Then, we propose a time varying construction of the post-encoded parity in order to reduce the observable loss of convergence at high error rates. The different improvement stages are illustrated with simulation results, asymptotical bounds and EXIT charts.

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