Structuring LDPC coding method

A coding method and structured technology, applied in error detection coding using multi-bit parity bits, error correction/detection using block codes, error correction/detection using linear codes, etc., which can solve the problem of high coding complexity and other problems to achieve the effect of saving storage space, excellent performance, and reducing coding complexity

Inactive Publication Date: 2009-05-06
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now there are some deterministic algebraic coding methods, which can quickly generate the check matrix, but often require high coding complexity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Structuring LDPC coding method
  • Structuring LDPC coding method
  • Structuring LDPC coding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0041] Such as figure 1 As shown, the simulation process of the LDPC code in the communication system is as follows: the signal source is encoded by the LDPC code encoder, the code word obtained is modulated by the modulator, transmitted through the wireless channel, and demodulated at the receiving end to obtain soft demodulation information , decoded by an LDPC decoder to restore the information bits. The simulation mainly includes: LDPC encoder, modulator, channel emulator, demodulator, LDPC decoder and so on.

[0042] Firstly, the design method of check matrix of LDPC code is given, and then its iterative coding method is given. Combine below figure 2 The present invention is described further:

[0043] 1 check matrix H

[0044] Check matrix consists of two sub-matrices, H=[H p |H d ], and the construction methods of these two sub-matrices ar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

This invention discloses a structured LDPC coding method including: inputting parameter N,K to generate a matrix Hp, which is the matrix of the N-K stage, selecting parameters a and b to generate a linear congruence AO, A1, K, AP and KAM-1, then generating a matrix Hd, checking the matrix H based on H=[Hp|Hd], inputting an information bit sequence cd={di}, seeking the checked bit p1 and utilizing the iteration to get the rest check bit to constitute the check vectorcp={cd|cp} to get the code words c=[ cd|dp].

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a structured LDPC encoding method, which is the product of the combination of electronics, communication and computer technologies. Background technique [0002] Since the establishment of Shannon's information theory, channel coding theory has been practically applied in the following six fields: deep space communication and satellite communication, data transmission, data storage, mobile communication, file transmission and digital audio and video transmission. Five types of standards have thus emerged: space data system coding standards for deep space and satellite communications, trellis coding standards for high-speed data modulation and demodulation, RS coding standards for disk compression storage systems, mobile cellular communication systems Convolutional code encoding standard, CRC encoding standard for HDLC protocol. These applications clearly explain the richness...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/11H03M13/19
Inventor 刘文明朱光喜邓勇强王玲
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap