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Turbo iterative decoding method and device

An iterative decoding and decoding technology, which is applied in the direction of error correction/detection using convolutional codes, error correction/detection using interleaving technology, data representation error detection/correction, etc., can solve the problem of failure to obtain decoding results, Large hardware resources, time-consuming and other problems, to achieve the effect of reducing decoding complexity, reducing the number of decoding iterations, and improving performance

Active Publication Date: 2015-04-29
上海思朗科技有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at this time, the Turbo decoder not only fails to obtain the correct decoding result, but also uses a large amount of hardware resources and spends too much time.

Method used

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  • Turbo iterative decoding method and device
  • Turbo iterative decoding method and device
  • Turbo iterative decoding method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (k is the information bit index)

[0074] Δ ′ ( i ) = Δ ( i ) , i = 1 | Δ ( i ) - Δ ( i - 1 ) | , i > 1 .

Embodiment 2

[0076] (k is the information bit index)

[0077] Δ ′ ( i ) = Δ ( i ) , i = 1 | Δ ( i ) - Δ ( i - 1 ) | , i > 1 .

Embodiment 3

[0079] (k is the information bit index)

[0080] Δ ′ ( i ) = Δ ( i ) , i = 1 | Δ ( i ) - 1 i - 1 Σ i = 2 i - 1 ...

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Abstract

The invention discloses a Turbo iterative decoding method and device. The device comprises a first subdecoder, a first interleaver, a second interleaver, a second subdecoder, a first de-interleaver, a second de-interleaver, a hard judgment unit and a decoding difference judgment unit. The method comprises the following steps: carrying out iterative decoding on system information, first inspection information and second inspection information by the two soft-input and soft-output subdecoders, and carrying out iterative stop judgment on the difference of the output bit soft information of the two subdecoders by the decoding difference judgment unit. The Turbo iterative decoding method and device can effectively reduce iterative decoding times when the quality of received signals is poor, reduce decoding complexity, reduce hardware and time investment, and accordingly improve the performance of the whole system.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a Turbo iterative decoding method and a decoding device. Background technique [0002] Turbo codes, also known as parallel concatenated convolutional codes, were proposed by C. Berrou, A. Glavieux and P. Thitimajshiwa in 1993 at the International Conference on Communication (ICC: International Conference on Communication). Various research and simulation results show that Turbo codes not only have superior performance in resisting additive white Gaussian noise, but also have strong anti-fading and anti-jamming capabilities, and their error correction performance is close to the Shannon limit. Therefore, it is widely used in various communication systems, among which the third and fourth generation mobile communication systems use Turbo codes as the channel coding standards for transmitting high-speed data. [0003] The turbo encoder consists of two parallel cascaded co...

Claims

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Application Information

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IPC IPC(8): H03M13/23H03M13/27
Inventor 王晓琴赵旭莹吴军宁
Owner 上海思朗科技有限公司
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