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Channel coding and decoding method based on Chinese conversion codes

A technology of Chinese remainder theorem and channel decoding, applied in the direction of using return channel for error prevention/detection, digital transmission system, error prevention, etc., can solve problems such as fountain code technology that does not appear

Inactive Publication Date: 2013-04-10
WUHAN UNIV
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Problems solved by technology

[0024] However, there is no fountain code technology implemented by applying the Chinese remainder theorem in this field

Method used

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  • Channel coding and decoding method based on Chinese conversion codes
  • Channel coding and decoding method based on Chinese conversion codes
  • Channel coding and decoding method based on Chinese conversion codes

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Embodiment Construction

[0043] The technical solutions of the present invention will be described below in conjunction with the drawings and embodiments, and it should be noted that the meanings of the symbols in the elaboration process have nothing to do with the corresponding symbols in the background technology.

[0044] The technical scheme of the present invention builds fountain codes based on the Chinese remainder theorem, and the coding end performs the following steps,

[0045] First, for a single original information packet, set the code packet length and prime number set;

[0046] Then, randomly select decomposed prime numbers from the prime number set, divide the original information into groups and perform remainder operations on the decomposed prime numbers, and form a coding group with the correspondence between the remainder and the relevant decomposed prime numbers; cyclically generate coded groups and transmit them to the decoding end, and receive the decoding end After the decoding...

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Abstract

The invention provides a channel coding and decoding method based on Chinese conversion codes. The Chinese conversion codes are constructed by using the Chinese remainder theorem, coding is realized by continuously decomposing the original group with finite length into coding groups comprising the information of decomposition primes and remainders, and thus, coding groups with infinite length in theory can be produced. Decoding is realized by receiving a plurality of groups from the coding groups, and the coding structure of the original group value can be recovered by decoding. The channel coding and decoding method based on the Chinese conversion codes is designed on the basis of an erase channel. When being combined with other traditional channel coding and decoding technologies, the channel coding and decoding method can be popularized and applied to the channel coding and decoding technology of a lossy channel.

Description

technical field [0001] The invention relates to the technical field of channel coding and decoding, in particular to a channel coding and decoding method based on Chinese transformation codes. Background technique [0002] In the traditional single-point communication using fixed code rate encoding, the application layer and transport layer of the communication protocol use ARQ (Auto Repeat reQuest) technology to ensure reliable transmission, such as the widely used TCP (Transmission Control Protocol) protocol. But in the broadband wireless communication network with limited bandwidth and uncertain delay, the performance of TCP protocol is not good. ARQ technology is not easy to solve the problem of feedback implosion. A large number of user feedback increases the burden on the sender and limits the scalability of multicast. The channel error correction technology based on fixed bit rate coding technology and ARQ congestion control system has been difficult to meet the requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16
Inventor 黄诚易本顺
Owner WUHAN UNIV
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