A Turbo code transmission block segmenting method

A technology of transmission block and transmission block length, applied in the field of segmentation of Turbo code transmission block

Inactive Publication Date: 2007-10-24
ZTE CORP
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Problems solved by technology

[0016] The technical problem to be solved in the present invention is to fully consider the characteristics of the packet transmission system that adopts Turbo coding, and to provide a new Turbo code block grouping method, that is, to use different segmentation methods according to the size of the transmission block, and the grouping method can fully Guarantee the overall performance of the system and minimize the number of filling bits, thereby reducing the complexity of the Turbo decoder and reducing the decoding delay

Method used

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  • A Turbo code transmission block segmenting method
  • A Turbo code transmission block segmenting method
  • A Turbo code transmission block segmenting method

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[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Please refer to FIG. 2 . FIG. 2 is a processing flow of the turbo encoding block segmentation method of the present invention.

[0041]First, judge whether the transmission block length is greater than the transmission block length threshold set by the system, where the transmission block length threshold is clearly defined in the system, denoted as X threshold ;

[0042] (1) If the length of the transport block is less than or equal to the threshold X threshold , an interleaver length K I Segment the transmission block, that is, the transmission block will only be divided into one length K I grouping, the specific method is as follows:

[0043]

[0044]

[0045] Here, C is the number of code blocks into which the transport block is divided, and i is K table The index of the i-th interleaver length in , 1≤i≤T. Indicates ch...

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Abstract

The disclosed segmenting method for Turbo code comprises: deciding whether the transmission block length over the system-set threshold; if equal or less than the threshold, using interlace device length KI for segmentation; or else, using near KI-1 and KI for segmentation. This invention ensures system performance, reduces filling-bit number, and decreases the complexity and time delay.

Description

technical field [0001] The invention relates to a channel coding and multiplexing method in a digital communication system, in particular to a transmission block segmentation method under the condition that the interleaver length adopted by the Turbo code in the communication system is discrete. Background technique [0002] In the communication system, in order to improve the reliability of information transmission in the channel and improve the anti-interference ability of data on the channel, it is necessary to adopt the corresponding channel coding technology. Among many channel codes, Turbo codes have strong error correction ability and can meet the requirements of high reliability data transmission. Turbo coding is a parallel concatenated code with an internal interleaver. Generally, it consists of an internal interleaver concatenated in parallel with two recursive systematic convolutional code component code encoders with the same structure. As shown in Figure 1. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/00H03M13/27
Inventor 袁志锋徐俊胡留军
Owner ZTE CORP
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