Iterative decoding method for RS product code cascade convolution code system

An iterative decoding and product code technology, which is applied in the iterative decoding field of RS product code concatenated convolutional codes, can solve the problems of large computational complexity and low algorithm throughput, and achieves improved performance, improved performance, and increased effective information. amount of effect

Inactive Publication Date: 2009-07-29
SOUTHEAST UNIV
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Benefits of technology

This patented technology helps improve communication by providing precise data transmission even when there may be errors during decode or failures at certain points along its path. It also uses an auxiliary method called Error Correcting Code (ECC) that can enhance signal quality while reducing complexity compared to other methods like CBCJR. Overall, this technology makes better communications possible through increased accuracy and efficiency.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficiency at performing binary symbolic computation (BSC) coding/convolutional coded encoding techniques used in communication systems like mobile devices. Specifically, current methods require significant calculations when constructing an estimate based upon input data values before processing them into final results, making their effectiveness less than ideal even if these improvements were achieved over time.

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  • Iterative decoding method for RS product code cascade convolution code system
  • Iterative decoding method for RS product code cascade convolution code system
  • Iterative decoding method for RS product code cascade convolution code system

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Embodiment Construction

[0032] The present invention is a decoding method of concatenated RS product code and convolution. First, the convolutional code decoder performs soft-decision decoding on the inner code of the concatenated code; The soft information vector R of the deinterleaved RS product code decoder delivered by the code decoder is processed as follows:

[0033] 1. The decoder of the row component code of the RS product code first combines the soft information vector R of the RS product code decoder with the soft outer information W of the decoder of the column component code c Add up to get the first sequence r 1 , after the hard decision, the binary phase modulation and demodulation is performed, and the first sequence r 1 The values ​​of are sorted according to reliability to obtain the most unreliable bits. The present invention selects 4 bits and adds an error pattern to the several bits each time for decoding. Once the decoding result can pass the verification , that is, add the co...

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Abstract

The invention discloses an iterative decoding method of an RS product code concatenated convolutional code system, which comprises the following steps of: step S001: providing a convolutional code decoder and an RS product code decoder, and then soft-decision decoding the convolutional code decoder; de-interleaving the bit level soft information transmitted by the convolutional code decoder, and then decoding by the RS product code decoder; and interleaving the bit level external information generated by the RS product code decoder and feeding back to a BCJR decoder as a priori probability; step S002: checking the code word of the RS product code, when the stop condition can not be satisfied after checking, the number of iterations is added with 1, implementing the step S003, and when the stop condition can be satisfied after checking, implementing the step S004; and the decoding method can fully utilize the soft information.

Description

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Application Information

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Owner SOUTHEAST UNIV
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