Method and device for polar code coding

一种极化码、码字的技术，应用在极化码编译领域，能够解决误帧率高等问题，达到增加随机性、增大范围、降低错误平层的效果

Active Publication Date: 2022-03-04
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Application Information

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Problems solved by technology

[0005] However, in the existing polar code coding methods, both of these two coding methods have the problem of high frame error rate

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  • Method and device for polar code coding
  • Method and device for polar code coding
  • Method and device for polar code coding

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Embodiment Construction

[0058] At present, there are two coding methods of polar codes, which are parity-check code-assisted polar code (Parity-Check Polar Code, PC-polar) coding method and cyclic redundancy check-assisted polar code (Cyclic Redundancy Check Polar Code, CRC-polar) compilation method.

[0059] figure 1 Shows the flow of the CRC-polar compilation method, such as figure 1 As shown, the process of CRC-polar compilation method is:

[0060] First, the CRC encoder performs CRC encoding on the input information sequence, and then sends the information sequence and the CRC check bits generated by the CRC encoding to the Polar encoder; the Polar encoder generates a polar code word and outputs it to the modulator.

[0061] The modulator maps the polar code word into a modulated signal, and transmits it to the demodulator through a channel; the demodulator demodulates the transmitted modulated signal to obtain the transmitted polar code code Bit soft information is input to the Polar-CRC join...

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Abstract

A method and device for compiling polar codes, the method comprising: respectively determining information bit positions, check bit positions, and frozen bit positions; generating a check equation for each check bit; wherein: the check equation for each check bit The verification equation includes the verification relationship of the previous verification bit; the verification bit is generated according to the verification equation; the polar code input bit sequence is generated; the polar code is encoded to the polar code input bit sequence to obtain the polar A code word; mapping the polar code word into a modulated signal and transmitting it through a channel; demodulating the transmitted modulated signal to obtain soft information of bits of the transmitted polar code word; The soft information of the bits of the polar code word is processed by using a continuous cancellation list decoding algorithm to obtain a decoding result. By adopting the above solution, the frame error rate of polar code coding can be reduced.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular, to a polar code coding method and device. Background technique [0002] At present, there are two coding methods of polar codes, which are parity-check code-assisted polar code (Parity-Check Polar Code, PC-polar) coding method and cyclic redundancy check-assisted polar code (Cyclic Redundancy CheckPolar Code, CRC-polar) compilation method. [0003] The process of the PC-polar compilation method is as follows: firstly, the information sequence is placed in a position with a large bit channel capacity, and then the check bit value is calculated according to the position distribution of the information bit, and the information sequence and the check bit are sent to the polar code encoding When decoding, it uses a parity-check-assisted consecutive cancellation list (Successive Cancellation List, SCL) decoding algorithm to decode, and performs the same check calc...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0057H04L1/004
Inventor徐旻子樊婷婷徐志昆
OwnerSPREADTRUM COMM (SHANGHAI) CO LTD