LDPC/Turbo code dual-mode decoder

A technology of LDPC code and decoder, applied in the direction of coding, code conversion, coding components, etc., can solve the problems of different decoding algorithms, different hardware structures of single-mode decoders, waste of resources, etc.

Inactive Publication Date: 2017-01-04
CHINA JILIANG UNIV
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decoding algorithms of LDPC code and Turbo code are different, which will lead to the difference in the hardware structure of the single-mode decoder. If the single-mode decoder is simply combined into a dual-mode decoder, it will definitely cause a waste of resources.

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
  • LDPC/Turbo code dual-mode decoder
  • LDPC/Turbo code dual-mode decoder
  • LDPC/Turbo code dual-mode decoder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The LDPC / Turbo code dual-mode decoder of the present invention comprises an input cache, a demultiplexing unit, a posteriori information (Lall) storage unit, a data reorganization interleaving network, a SISO array, an external information (Lmd) storage unit, a lower Second iteration (NII) unit, hard decision output unit and control unit, what the Lall storage unit and the Lmd storage unit of described LDPC / Turbo code dual mode decoder adopted is the mode of storage unit splicing and SISO decoding unit is based on CFU unit is designed.

[0021]The Lall storage unit of the present invention is used for storing Turbo channel information, LDPC code channel information and posteriori information. When performing LDPC decoding, the channel information is written into the Lall storage unit in columns. When Turbo decoding is performed, the channel information is first demultiplexed to output system information bits, check 1 and check bit 2 information, and then stored in 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 discloses a LDPC/Turbo code dual-mode decoder. The decoder comprises an input buffer, a de-multiplexing unit, a posteriori information storage unit, a data reconstitution interlacing network, a SISO array, an outer information storage unit, a next iteration unit, a hard decision output unit and a control unit. The SISO array is formed by 12 SISO decoding units. The SISO decoding units are main calculating units of the dual-mode decoder and are designed based on a configurable dual-mode calculating unit. A code length difference of a LDPC code and a Turbo code is large. If a design is performed according to code length maximization, resource wastes are generated. And the above problem is solved through using a storage unit splicing mode by the posteriori information storage unit and the outer information storage unit. In the invention, dual-mode decoding of the LDPC and Turbo codes can be realized, and resource sharing of two aspects of the calculating units and the storage units is realized too.

Description

technical field [0001] The invention relates to the field of modern communication systems, in particular to the technical field of channel coding and decoding, and in particular to an LDPC / Turbo code dual-mode decoder capable of decoding both LDPC codes and Turbo codes. Background technique [0002] In a modern communication system, the information to be transmitted can be corrected by encoding, modulation, channel transmission, demodulation and decoding. The decoder acts on the above-mentioned decoding process. The excellent performance of LDPC codes and Turbo codes makes many communication standards choose these two codewords as channel coding schemes or alternative schemes. In future communication systems, LDPC and Turbo codes are also indispensable schemes. Multi-mode error correction decoders play an important role in the exchange of information between different communication networks. However, the decoding algorithms of LDPC code and Turbo code are different, which ...

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): H03M13/11H03M13/29
CPCH03M13/1108H03M13/2966
Inventor 王秀敏曹维林李婷婷宿晨李正权
Owner CHINA JILIANG UNIV
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