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High-throughput-rate LDPC decoding algorithm and architecture for 5G terminal

A high-throughput, decoding algorithm technology, applied in the field of high-throughput LDPC decoding algorithms and architectures, can solve problems such as impracticality and complex decoding steps, and achieve low implementation complexity, high throughput, The effect of small loss of decoding performance

Pending Publication Date: 2020-05-29
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

When the dynamic scheduling decoding scheme performs node updates, each node update needs to calculate the residual value of the entire parity check matrix, so the decoding steps are very complicated, and it is temporarily not practical in 5G

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  • High-throughput-rate LDPC decoding algorithm and architecture for 5G terminal
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  • High-throughput-rate LDPC decoding algorithm and architecture for 5G terminal

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Embodiment Construction

[0043] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] figure 2 A brief architecture for the 5G terminal decoder, such as figure 2 As shown, it is a brief structure of the 5G terminal decoder. Under the control of the control logic module, the channel information enters the decoder. After related processing, the calculation unit in the VCN module is used to update the node. The inherent The information and the intermediate information in the node update process are stored in the message RAM, and finally the decoding result is output. In the VCN module, node update is mainly performed, that is, the realization of the layered scheduling minimum sum decoding algorithm in the present invention, and other calculation processes.

[0045] figure 1 It is the LDPC hierarchical scheduling minimum sum decoding algorithm flow. In the decoding process, the main steps are: initialize variable nodes ...

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Abstract

The invention relates to a high-throughput-rate LDPC decoding algorithm and architecture for a 5G terminal, and belongs to the technical field of wireless communication. According to the scheme, the requirement of high throughput rate of data in 5G communication can be met. The architecture mainly comprises a VCN module, a control logic module and a message RAM module. The algorithm comprises thesteps: layering a check matrix according to a base graph and an expansion factor of a 5G QC-LDPC code, forming a layer block structure on each layer, enabling a computing unit of a VCN module to adopta minimum sum decoding algorithm to update nodes, and updating all check nodes in the layer block structures in parallel, thereby increasing the decoding throughput rate; storing the updated posterior information in an interlayer shift register and transmitting the updated posterior information to the next layer to assist subsequent node updating, wherein the symbol information and amplitude information of the node update message are separately processed and stored, so the complexity is reduced. The scheme is suitable for a 5G communication standard, has the characteristics of low complexityand high throughput rate, and is suitable for the field of channel decoding of a wireless communication technology.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a high-throughput LDPC decoding algorithm and architecture for 5G terminals. Background technique [0002] The purpose of communication is the process of sending signals from one end and receiving them at the other end to obtain information. In this process, due to channel fading and noise interference in the channel, the reliability of information acquisition at the receiving end will be seriously affected, and the information acquisition rate will be reduced. quality. Therefore, the proposal of channel coding technology is to improve the transmission quality of signals in the channel. In 1948, Shannon's "Mathematical Theory of Communication" laid the foundation of information theory, and the channel coding theory he defined provided theoretical support for later encoding and decoding technologies. [0003] In 1963, Gallager proposed Low-Density Parity-Check Codes...

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Application Information

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IPC IPC(8): H03M13/11H04L1/00
CPCH03M13/1111H03M13/116H04L1/0057H04L1/0045
Inventor 张治中王昊钟储苓
Owner CHONGQING UNIV OF POSTS & TELECOMM
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