Coding-decoding method for integrated source and channel variable-length symbol Turbo

A channel coding and long symbol technology, which is applied in coding, coding components, and error correction/detection by combining multiple code structures, can solve the problems of limited performance and inapplicability of separate coding systems, and improve the bit error rate. Performance, efficiency-enhancing effects
CN1794590AInactive Publication Date: 2006-06-28GRADUATE SCHOOL OF THE CHINESE ACAD OF SCI GSCAS
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GRADUATE SCHOOL OF THE CHINESE ACAD OF SCI GSCAS
Publication Date
2006-06-28
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention puts forward a method for jointly compiling Turbo codes of variable-length signs of source channels, which sorts the variable-length code word sequences output by the source coding according to code length and probability to carry out unequal error protection, in which, Turbo code of high code rate is applied for coding to the long code word appearing in small probability with less important level and Turbo code of low code rate is applied for coding to the short code word in large probability with important level.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a joint source-channel coding method in the field of communication coding, in particular to a joint source-channel coding method using a variable-length symbol as a Turbo code input unit for coding. Background technique

[0002] In 1848, C.E. Shannon, the founder of communication coding theory, proposed the famous "Separation Theory" in his paper "A Mathematical Theory Of Communication. Bell System Technology Journal, 27: 379-423; 623-656, 1948." Theory), that is, the optimal communication system can be obtained by separately designing source coding and channel coding as independent links. On the basis of separation theory, the classical communication system model designed by people is shown in Figure 1. Shannon's "separation theory" is a conclusion obtained under ideal conditions. This theory assumes that source coding is the best compression, which can remove all redundancy in the source information, and channel coding is al...

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