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Polar code compiling method and apparatus

A technology of polar codes and codewords, applied in the field of polar code coding, can solve the problem of high frame error rate

Active Publication Date: 2018-10-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
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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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  • Polar code compiling method and apparatus

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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

The invention provides a polar code compiling method and apparatus. The method includes steps: respectively determining an information bit position, a verification bit position and a freezing bit position; generating a verification equation of each verification bit, wherein the verification equation of each verification bit includes a verification relation of a previous verification bit; generating the verification bit according to the verification equation; generating a polar code input bit sequence; performing polar code coding on the polar code input bit sequence to obtain a polar code codeword; mapping the polar code codeword to a modulation signal, and performing transmission through a channel; demodulating the transmitted modulation signal to obtain soft information of a bit of the transmitted polar code codeword; and processing the soft information of the bit of the polar code codeword by employing a successive cancellation list decoding algorithm to obtain a decoding result. Byadopting the above scheme, the frame error rate of polar code compiling 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 & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/13H03M13/09
CPCH04L1/0057H04L1/004
Inventor 徐旻子樊婷婷徐志昆
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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