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Turbo code decoding method and apparatus

A decoding device and decoding technology are applied in the field of turbo code decoding methods and devices, which can solve the problems of reduced turbo code decoding performance, inability to adapt to real channel characteristics, high computational complexity, etc., and achieve improved decoding performance, The effect of reducing the amount of data storage and complexity, and reducing the decoding error rate

Inactive Publication Date: 2016-02-24
SPACE STAR TECH CO LTD
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Problems solved by technology

The fuzzy setting of this parameter in the existing decoding algorithm makes it unable to adapt to the real channel characteristics, has high computational complexity, indirectly reduces the decoding performance of Turbo codes, and its decoding error rate is also relatively high

Method used

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  • Turbo code decoding method and apparatus
  • Turbo code decoding method and apparatus
  • Turbo code decoding method and apparatus

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] see figure 1 As shown, it is a schematic diagram of a Turbo code decoding method provided in Embodiment 1, which includes the following steps:

[0030] S101. Calculate channel reliability in real time at the receiving end through preprocessing based on data received from the channel.

[0031] When the receiving end receives the encoded data sent by the sending end from the channel, it is usually necessary to demodulate each received data packet first. After the data is demodulated but before Turbo decoding, based on the The obtained data is preprocessed, and the channel reliability required for Turbo decoding is calculated in real time. Wherein, the channel is an additive white Gaussian noise channel.

[0032] By calculating and updating the channel reliability in real time, the accuracy of judging the channel reliability is improved, and the confidence of subsequ...

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Abstract

The invention provides a Turbo code decoding method and apparatus. The Turbo code decoding method comprises: calculating the reliability of a channel in real time through preprocessing based on the data received from the channel at a receiving end; and performing Turbo decoding by means of combination of the reliability of the channel. The Turbo code decoding method can calculate the reliability parameter of the channel in real time, and overcomes the defect that in an existing decoding algorithm the fuzzy setting of the parameter cause that the real channel characteristics cannot be adapted so the method can realize real-time calculation of the reliability of the channel by using lower complexity and indirectly improve the decoding performance of turbo code and reduce the error rate for decoding.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a turbo code decoding method and device capable of improving the channel reliability of the turbo code in real time. Background technique [0002] Turbo code is an important channel coding method, and its performance is close to Shannon's limit. It not only shows superior performance in low signal-to-noise ratio and high noise, but also has strong anti-interference and anti-fading capabilities. Turbo has excellent error correction performance, and it is used for error control coding in the third-generation and fourth-generation mobile communication technologies. The Turbo code adopts a parallel concatenated convolutional code structure, and its encoder is formed by parallel concatenation of two feedback component code encoders. In order to reduce the correlation of component code output, an interleaver is added, that is, the input sequence After passing through the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/29
Inventor 刘江春柳慧芬段鹏婷赵诚王育刚
Owner SPACE STAR TECH CO LTD
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