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Weight spectrum evaluation for multi-binary tailbiting turbo codes

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2 Author(s)
Ferrari, M. ; Dipt. di Elettronica e Informazione, Politecnico di Milano, Milan, Italy ; Bellini, S.

In this paper we propose a method for the evaluation of the weight spectrum of parallel concatenated turbo codes with tailbiting (circular) m-ary component codes. Our method is based on a two step evaluation; we search and store a set of error events for the component codes; then, we evaluate the spectrum of the concatenated code with the actual interleaver. When working with different interleavers, the first step is computed only once. We show some examples with rate 6/7 component codes.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 7 )