Turbo code decoder and decoding method

A decoder and decoding technology, applied in the field of turbo code decoder and decoding, can solve the problem of large delay in decoding processing and the like

Inactive Publication Date: 2010-06-23
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem to be solved by the present invention is to propose a Turbo code decoder and decoding method to solve the problem of relatively large delay in decoding processing in the existing system

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  • Turbo code decoder and decoding method
  • Turbo code decoder and decoding method
  • Turbo code decoder and decoding method

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0033] Such as figure 1 Shown is a schematic diagram of the decoder structure of the present invention.

[0034] The turbo code decoder disclosed in the present invention includes a first component decoder, a second component decoder, a first interleaver, a second interleaver, a deinterleaver and a decision unit.

[0035] Among them, the first component decoder receives RX, RZ and prior information W1 to perform soft-input and soft-output SISO decoding, and outputs additional information sequence Lel and likelihood value sequence LLR1, wherein RX is from the received information corresponding to the first component The information bit sequence output by the encoder, RZ is the parity bit sequence output from the first component encoder corresponding to the received information.

[0036] The first interleaver outputs a priori ...

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Abstract

The invention discloses a Turbo code decoder and a decoding method. The decoder comprises a first component decoder, a first interleaver, a second interleaver, a second component decoder, a deinterleaver and a decision device. The decoder adopts parallel decoding processing to ensure that the first component decoder and the second component decoder can simultaneously conduct component decoding processing, so the decoding delay is reduced and the decoding speed is improved. Moreover, when in decoding, the decision device can simultaneously receive likelihood value sequences from the two component decoders for final decoding output, so the decoding reliability is improved.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a Turbo code decoder and a decoding method. Background technique [0002] During the transmission process of digital signals, errors will occur due to the influence of noise and interference. In the communication system, error correction coding technology is generally used to ensure reliable transmission. Turbo code is a coding scheme proposed by C.Berrou et al. in 1993. Because it has better performance than other codes in the application environment of low signal-to-noise ratio, Turbo code is used as a wireless channel in various mobile communication systems. One of the coding standards. Generally, a Turbo encoder consists of two systematic recursive convolutional (RSC) encoders, an interleaver and a deleter. [0003] With the continuous development of mobile communication, Turbo coding and decoding technology has been continuously d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/29
Inventor 陈军王正海索士强孙韶辉
Owner CHINA ACAD OF TELECOMM TECH
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