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Encoding and decoding method and encoding and decoding equipment

A coding method and equipment technology, applied in the field of information coding, to achieve the effects of simple implementation, less resources, and short execution time

Active Publication Date: 2013-06-05
北京东方广视科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fast encoding and decoding method and equipment suitable for a large amount of data transmission and communication channel interference for the problem that a single encoding error correction algorithm cannot meet the requirements of different data communication applications

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  • Encoding and decoding method and encoding and decoding equipment
  • Encoding and decoding method and encoding and decoding equipment
  • Encoding and decoding method and encoding and decoding equipment

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0017] The code group mentioned in this article may be a set composed of multiple code elements, and may also be called a block code. The symbol mentioned herein may refer to a data set of a certain number of digits. The information symbols mentioned herein may refer to symbols carrying valid information (data).

[0018] Before introducing the gist of the present invention in detail, some basic concepts are briefly introduced.

[0019] Usually, a set of data with a certain number of digits is called a code element; a set of certain code elements is called a set of block codes or code groups. Each code group contains information symbols carrying valid informat...

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Abstract

The invention discloses an encoding and decoding method which comprises the steps of carrying out exclusive or operation on information code elements in a code group to obtain a bit sequence monitoring code element, sequencing the information code elements in the code group and the bit sequence monitoring code element together to enable each information code element to have an unique code sequence and the bit sequence monitoring code element to have the final sequenced code sequence, respectively carrying out odd-even check on the information code elements and the bit sequence monitoring code element, carrying out exclusive or operation on the code sequences of the information code elements with the odd-even check results of odd check or even check and the bit sequence monitoring code element to obtain a code sequence monitoring code element, adding the code sequence monitoring code element behind the bit sequence monitoring code element, and transmitting code groups with the code sequence monitoring code elements and the bit sequence monitoring code element.

Description

technical field [0001] The present invention relates to the field of information coding, in particular to a codec method and equipment. Background technique [0002] During the transmission of digital signals, channel coding is required to reduce the bit error rate and improve the reliability of digital communication. Hamming codes are mainly used widely at present. The Hamming code was proposed by Hamming in 1950, and it is a linear block code with the ability to correct one bit error. The main algorithm of Hamming code coding is how to find out the supervisory matrix H that corrects an error according to the number of information bits k, and then find out the code word corresponding to the information bit according to H. [0003] Similar to other error-checking codes, Hamming codes also use the concept of parity bits. By adding some bits behind the data bits, the validity of the data can be verified. Using more than one check digit, Hamming codes can not only verify tha...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 冯兴房宋冬梅冯为心徐卫东
Owner 北京东方广视科技股份有限公司
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