Adjustable serial cancellation list polar code decoding method and device

A polar code and sequence decoding technology, which is applied in the field of serial offset list polar code decoding, can solve problems such as increasing the amount of calculation and increasing the complexity of decoding, so as to prevent the correct path from being deleted by mistake and save the complexity of decoding. degree, the effect of excellent bit error probability performance

Active Publication Date: 2021-04-23
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL +1
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Problems solved by technology

[0003] The traditional SCL decoding method needs to use a fixed-length list to retain the most possible path when decoding, and in order to ensure good decoding performance, it often needs a larger-length list to retain more possible paths, thereby increasing Reduce the amount of calculation, greatly improve the decoding complexity

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  • Adjustable serial cancellation list polar code decoding method and device
  • Adjustable serial cancellation list polar code decoding method and device
  • Adjustable serial cancellation list polar code decoding method and device

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Embodiment Construction

[0062] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0063] The adjustable serial offset list polar code decoding method provided by this application can be applied to such as figure 1 In the communication system shown. Wherein, the communication system includes a sending end device 102 and a receiving end device 104 . The sending end device 102 includes polar code encoding means for performing a subsequent polar encoding method; the receiving end device 104 includes a polar code decoding means for performing a subsequent polar code decoding method and outputs a decoding result. like figure 1 As shown, the sending end dev...

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Abstract

The invention relates to an adjustable serial cancellation list polar code decoding method and device. The method comprises the steps of determining candidate paths suitable for current sequential bit data in a to-be-decoded bit sequence and the number of the current paths; calculating a sequence decoding correct rate corresponding to the current sequence bit data, and screening target paths of the current path number from the candidate paths according to the sequence decoding correct rate; calculating a target probability corresponding to the current sequence bit data; adjusting the number of the current paths according to the target probability and a preset threshold, and re-screening the adjusted target paths with the target path number in the candidate paths; sequentially circulating the steps until the last sequence bit data to obtain a plurality of decoding paths from the first sequence bit data to the last sequence bit data; taking a decoding result of each bit data on the decoding path with the maximum sequence decoding accuracy as a target result. By adopting the method, the polar code decoding complexity can be reduced.

Description

technical field [0001] The present application relates to the communication field, in particular to an adjustable serial cancellation list polar code decoding method and device. Background technique [0002] With the development of science and technology, research work on the fifth generation mobile communication technology (5th-Generation, 5G) has been started worldwide. Facing the requirements for low-latency and high-reliability communication in 5G communication, polar code coding is mainly used to encode the transmission information in mobile communication, and then serial cancellation list (Succession Cancellation List, SCL) is used to encode The coded transmission information is decoded to complete the transmission of the information. [0003] The traditional SCL decoding method needs to use a fixed-length list to retain the most possible path when decoding, and in order to ensure good decoding performance, it often needs a larger-length list to retain more possible p...

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Application Information

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IPC IPC(8): H04L1/00H03M13/13
CPCH04L1/0057H04L1/0036H03M13/13
Inventor 焦健冯博文田园吴绍华张钦宇
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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