Threshold Based Iteration Stopping Criterion for Turbo Codes and for Scheme Combining a Turbo Code and a Golden Space-Time Block Code
This paper proposes an iteration stopping criterion for turbo decoding with Benedetto's decoding algorithm based on a posteriori probabilities. This stopping criterion is used in two schemes. Firstly, it is used in a classical turbo code scheme on additive white gaussian noise (AWGN) channel....
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2014-02-01
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| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2014.01021 |
| Summary: | This paper proposes an iteration stopping criterion for turbo decoding with Benedetto's decoding algorithm
based on a posteriori probabilities. This stopping criterion is used in two schemes. Firstly, it is used
in a classical turbo code scheme on additive white gaussian noise (AWGN) channel. Secondly, it is used in
a scheme combining a turbo code and a Golden space-time block code on fast Rayleigh fading multiple input
multiple output (MIMO) channel. Simulation results with different thresholds for the stopping criterion show
that a threshold of 1.2 and 1.4 in the first and second scheme, respectively, are sufficient for obtaining
the same bit error rate and frame error rate performance like in the case of using the ideal genie stopping
criterion. The difference between the average number of iterations for these thresholds and for the genie
stopping criterion is at most 1.5 and 1.25, respectively. |
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| ISSN: | 1582-7445 1844-7600 |