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Polar code decoding method with early termination and confidence enhancement and its architecture

A technology of early termination and confidence, applied in the direction of using linear codes for error correction/detection, using block codes for error correction/detection, advanced technology, etc., can solve the long delay of BP decoding and decoding, and it is difficult to take into account high-speed decoding Code, high computational complexity and other issues, to achieve the effect of low hardware consumption, high hardware usage efficiency, and reduced decoding delay

Active Publication Date: 2022-07-12
SOUTHEAST UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the relevant literature on polar codes, BP decoding has always had the problem of long decoding delay and low decoding accuracy.
For the decoding delay, the existing solutions are mainly to terminate the decoding in advance, but due to the setting of the judgment node, the further reduction of the decoding delay is limited; for the decoding accuracy, the existing solutions are mainly confidence enhancement and confidence Degree prediction is used to improve convergence accuracy, but the high computational complexity makes it difficult to meet the needs of high-speed decoding

Method used

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  • Polar code decoding method with early termination and confidence enhancement and its architecture
  • Polar code decoding method with early termination and confidence enhancement and its architecture
  • Polar code decoding method with early termination and confidence enhancement and its architecture

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Embodiment 1

[0031] like Figure 4 As shown, a polar code BP decoding architecture with early termination and enhanced confidence, including a general control unit for storing system instructions and operating logic, a BP decoding unit for completing the traditional decoding of polar codes, and Condition judgment unit for completing decoding early termination and confidence enhancement.

[0032] According to as Figure 4 The architecture of BP decodes a polar code with n stages, which specifically includes the following steps:

[0033] 1) The overall control unit selects the early termination scheme as early termination judgment based on partial confidence value (PLA), and selects the confidence enhancement scheme as confidence enhancement based on confidence threshold (TB-LLR);

[0034] 2) After the scheme selection is completed, the master control unit will generate the instruction set and data storage format for this scheme for subsequent decoding operations of the BP decoding unit; ...

Embodiment 2

[0046] like Figure 4 As shown, a polar code BP decoding architecture with early termination and enhanced confidence, including a general control unit for storing system instructions and operating logic, a BP decoding unit for completing the traditional decoding of polar codes, and Condition judgment unit for completing decoding early termination and confidence enhancement.

[0047] According to as Figure 4 The architecture of BP decodes a polar code with n stages, which specifically includes the following steps:

[0048] 1) Selecting the early termination scheme as early termination judgment (PLA) based on partial confidence value through the general control unit, and selecting the confidence enhancement scheme as confidence enhancement based on segmented cyclic check code (SD-CRC);

[0049] 2) After the scheme selection is completed, the master control unit will generate the instruction set and data storage format for this scheme for subsequent decoding operations of the ...

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Abstract

The invention discloses a polar code BP decoding method with early termination and confidence enhancement and its corresponding hardware architecture implementation. A BP decoding unit for decoding traditional decoding and a condition judgment unit for completing early termination of decoding and confidence enhancement, the method includes termination judgment assisted by partial confidence, convergence enhancement based on confidence threshold, and segmentation The formula cyclic check code is an auxiliary convergence enhancement and so on. The invention utilizes the judgment of confidence degree stability to greatly reduce the redundant iteration times in traditional BP decoding, and greatly reduces the decoding delay of polar codes; the confidence degree is enhanced based on the numerical change trend of the confidence degree, The convergence speed and accuracy are greatly accelerated, thereby further reducing the decoding delay and effectively ensuring the bit error rate performance.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a polar code BP decoding method with early termination and confidence enhancement and its corresponding hardware architecture implementation. Background technique [0002] Since the 1980s, wireless communication technology has developed rapidly and has become a hot technology with the greatest development potential and the broadest market prospect in the field of communication today. Mobile communication has experienced the development of the first generation of analog communication (1G), the second generation of cellular digital communication (2G), and the third generation of CDMA broadband communication (3G), and has now entered the fourth generation of mobile communication (4G) Industrialization application stage. Mobile communication is developing in the direction of high speed, high capacity, high spectral efficiency and low power consumption, con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/13
CPCH03M13/13Y02D30/70
Inventor 张川杨超景树森梁霄张在琛尤肖虎
Owner SOUTHEAST UNIV
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