High-speed parallel RS decoding method for space communication

A space communication and decoding technology, which is applied in the field of high-speed decoding, can solve the problem that the working clock of the decoder cannot be too high, and achieve the effects of improving performance, optimizing logic implementation, and increasing the decoding rate

Active Publication Date: 2011-02-09
SPACE STAR TECH CO LTD
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the multiplier used in the current RS decoder has not been optimized, the working clock of the decoder cannot be too high
At the same time, due to the continuous increase in the code rate of remote sensing satellite data transmission, it is more difficult to further increase the code rate on the basis of compatibility with different RS coding formats and interleaving depths

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
  • High-speed parallel RS decoding method for space communication
  • High-speed parallel RS decoding method for space communication
  • High-speed parallel RS decoding method for space communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] RS code is a channel coding format, which belongs to linear block codes. Since the RS code is built on the basis of finite field algebra, it is very suitable for multi-ary modulation systems. The main purpose of the RS code is to overcome burst errors in fading channels, and it is often used as an inner code in cascade with a convolutional code in order to obtain greater coding gain. Due to the sudden errors caused by lightning and so on in space communication, RS is very suitable for use in space communication. With the development of space communication technology, the data transmission code rate continues to increase, and the RS decoding rate also needs to be increased accordingly to meet the development needs. The present invention mainly solves the problem of how to increase the decoding rate in the implementation of the ...

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

The invention relates to a high-speed parallel Reed-Solomon (RS) decoding method for space communication. In the method, two decoding modules RS (255, 223) and RS (255, 239) are configured simultaneously, so that a decoder can configure decoding types on line according to coding parameters to flexibly adapt to two coding formats specified by the consultative committee for space data system (CCSDS) standard; input data is filled and acquired in first in first out (FIFO) by ping-pong operation during deinterlacing and interlacing, a multi-channel parallel pipeline mode is adopted during decoding, and a composite structure ensures the maximization of system performance and realizes the minimization of resources and is suitable for 1 to 8 arbitrary interlacing depths; and measures such as multi-channel parallel RS decoding, the optimization of realization logic of a finite field multiplier, and the like are adopted, so that decoding rate is greatly improved. The method can be directly applied to a high-code-rate remote sensing satellite ground receiving system and can further increase parallelism degree and improve performance when necessary by modular design.

Description

technical field [0001] The present invention relates to a high-speed decoding method of RS coding for space communication, which is mainly used in space communication ground channel decoders for high-speed RS decoding of demodulated data, correcting channel transmission errors, and can also be used for other applications direction of data demodulation in the receiving device. Background technique [0002] RS codes are a class of multi-ary BCH codes with strong error correction capabilities, and they are also a class of typical algebraic geometry codes. It was first constructed by Reed and Solomon in 1960 using MS polynomials. RS codes constructed with MS polynomials are non-systematic codes, but systematic codes can be generated using the BCH code construction method. Since the maximum possible minimum distance of a linear code is the number of parity elements plus 1, and the RS code just does this, the RS code is called a maximum minimum distance separable code (MDS code)...

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 Applications(China)
IPC IPC(8): H04L1/00
Inventor 张拯宁崔骞战勇杰朱翔宇
Owner SPACE STAR TECH CO LTD
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