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Acquisition method and device for evaluating threshold value of perforation pattern performance

A technology for obtaining method and threshold value, which can be used in error prevention/detection using return channel, digital transmission system, electrical components, etc., and can solve problems such as limited applicable scenarios

Active Publication Date: 2010-06-23
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] The present invention provides a method and device for obtaining a threshold value for evaluating the performance of a punching pattern, which solves the problem of limited applicable scenarios

Method used

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  • Acquisition method and device for evaluating threshold value of perforation pattern performance
  • Acquisition method and device for evaluating threshold value of perforation pattern performance
  • Acquisition method and device for evaluating threshold value of perforation pattern performance

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Embodiment Construction

[0034] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] In the embodiment of the present invention, the puncture pattern used when encoding the information bits is obtained according to the extension matrix of the base matrix, the extension matrix is ​​obtained according to the base matrix of the quasi-cyclic low-density parity-check code; the puncture factor is obtained according to the puncture pattern and non-puncturing factor; get the first mutual information value according to the set signal-to-noise ratio; get the fourth mutual information value according to the transformation matrix of the basis matrix, the punching factor, the non-punching factor and the first mutual information value; get the fourth mutual information value according to the fourth The mutual information value is used to obtain the threshold value for evaluating the performance of the punching...

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Abstract

The invention discloses an acquisition method and a device for evaluating a threshold value of perforation pattern performance. The method comprises the following steps of acquiring a perforation pattern used when encoding information bits according to an expansion matrix of a basic matrix, wherein the expansion matrix is obtained according to the quasi-cyclic basic matrix with low density and anodd-even check code; obtaining a perforation factor and a non perforation factor according to the perforation pattern; obtaining a first mutual information value according to a set signal noise ratio; obtaining a fourth mutual information value according to a conversion matrix, the perforation factor, the non perforation factor and the first mutual information value of the basic matrix; and obtaining the threshold value used for evaluating the perforation pattern performance according to the fourth mutual information value. The invention can enhance the working efficiency and is suitable for perforation pattern performance evaluation of perforations with arbitrary amount and perforation positions.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and device for acquiring a threshold value for evaluating the performance of a perforated pattern. Background technique [0002] Low Density Parity Check (Low Density Parity Check, LDPC) codes have unique advantages in the field of channel coding and decoding, and Hybrid Automatic Repeat Request (HARQ) technology can obtain higher spectral efficiency. LDPC codes usually use a belief propagation algorithm, which is an iterative decoding algorithm. Puncture the original LDPC image in the decoding process (for the quasi-cyclic LDPC code, the original image can be obtained by transforming its basis matrix), which can realize the effective combination of LDPC technology and HARQ technology. In order to improve the system performance, it is necessary to obtain the punching pattern with the best performance. At present, the method of simulation is usually used to evaluate the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/18H04W24/00
Inventor 徐鹰
Owner HUAWEI TECH CO LTD
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