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OALib Journal期刊
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Fast Log MAP decoding method of Turbo code
一种Turbo码的快速Log MAP译码算法*

Keywords: log maximum a posteriori decoding,turbo code,simplification
对数最大后验概率译码
,Turbo码,简化

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Abstract:

Log-MAP algorithm is a simplified decoding method of Turbo code. The algorithm has the defects of high complexity and decoding delay. A simplified log maximum a posteriori (Log-MAP) algorithm is presented based on approximation theory in this paper. In the simplified algorithm, the sectional optimal square approximation polynomial is adopted to calculate the correction function. Compared with the standard Log-MAP algorithm, the simplified algorithm has the advantages of low complexity, low decoding delay. And the decoding performance is similar to the standard Log-MAP algorithm. So it is more suitable for using in practical engineering.

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