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LDPC decoding method based on simplified BP algorithm

A BP algorithm and decoding technology, which is applied in the direction of error detection coding, coding, and code conversion of multiple parity bits, can solve the problems of high hardware implementation complexity and unfavorable applications, and achieve easy hardware implementation and reduce Effect of complexity, good decoding performance

Pending Publication Date: 2020-07-14
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, in the BP algorithm, the check node update process involves a large number of hyperbolic function calculations, so the hardware implementation complexity is relatively high, which is not conducive to practical applications

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  • LDPC decoding method based on simplified BP algorithm
  • LDPC decoding method based on simplified BP algorithm
  • LDPC decoding method based on simplified BP algorithm

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Embodiment Construction

[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematically illustrating the basic idea of ​​the present invention, and the following embodiments and the features in the embodiments can be combined with each other under the condition of no conflict.

[0038] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should not be const...

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Abstract

The invention relates to an LDPC decoding method based on a simplified BP algorithm, and belongs to the technical field of wireless communication. According to the method, the BP algorithm is simplified, the LDPC decoding complexity is reduced, and the method can adapt to the 5G NR standard. A piecewise linear approximation function generated by using an equal-error linear approximation principleis used for replacing a nonlinear function in check node updating in a BP algorithm, the improved BP algorithm only contains multiplication and addition, and therefore the hardware implementation complexity of the BP algorithm in a 5G terminal is reduced. The method is suitable for 5G QC-LDPC, has applicability to various LDPC codes, has the characteristics of low complexity and 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 an LDPC decoding method based on a simplified BP algorithm. Background technique [0002] The purpose of communication is to efficiently and reliably transmit the source information to the sink through the channel, so that the receiving end can reproduce the output of the source accurately or with a given degree of distortion. Wireless communication is an important part of modern communication. After decades of development, wireless communication started from the analog communication of the first generation wireless system (first generation wireless system, 1G), and experienced 2G, 3G, 4G digital communication. Today, 5G has become the research focus of modern communication technology, and has gradually entered the stage of commercial deployment. [0003] Enhanced Mobile Bandwidth (eMBB) is one of the three major application scenarios of the fifth generation wireles...

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Application Information

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IPC IPC(8): H03M13/11
CPCH03M13/1105
Inventor 张治中王昊钟储苓
Owner CHONGQING UNIV OF POSTS & TELECOMM
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