Coding and decoding methods and apparatuses of polar code

A coding method and polar code technology, which are applied in the field of polar code coding and decoding methods and devices, and can solve problems such as multi-parity bit overhead and BLER performance degradation

Active Publication Date: 2018-10-09
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For PC-polar, the last additional N bits are only used for error detection and not for auxiliary decoding, so the fals

Method used

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  • Coding and decoding methods and apparatuses of polar code
  • Coding and decoding methods and apparatuses of polar code
  • Coding and decoding methods and apparatuses of polar code

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Experimental program
Comparison scheme
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Embodiment 1

[0089] Figure 4 Illustratively shows a schematic flow chart of a polarization code encoding method provided by an embodiment of the present invention, such as Figure 4 As shown, the method may include:

[0090] S401. Segment the information sequence to be coded according to the segmentation strategy confirmed by the sender and receiver to generate I segment sequence m i ; 1≤i≤I and I> 1.

[0091] The segmentation strategy can be equal division strategy, non-equal division strategy, inter-segment overlap strategy, inter-segment non-overlap strategy, sequential division strategy, disorderly division strategy, full division strategy and partial division strategy.

[0092] Specifically, the information sequence to be encoded is segmented according to the segmentation strategy confirmed by the sender and receiver, and I segment sequence m is generated. i When, this I segment sequence m i It can be obtained by dividing the information sequence into equal parts, or it can be obtained by di...

Embodiment 2

[0108] In the second embodiment, the first encoder adopts a linear block code CRC encoder, such as Figure 5A Shown is a schematic diagram of a polarization code encoding provided in the second embodiment of the present invention. Figure 5A It can be seen that the sender first divides the information sequence m to be coded into I segment sequences according to the segmentation strategy confirmed by the sender and receiver, and mark the segment sequence as {m 1 ,m 2 ,...,m I }. Then, according to the segment sequence m 1 Use CRC encoder 1 to generate check sequence c 1 (Not shown), the segment sequence m 1 And check sequence c 1 Combine to generate code word sequence c′ 1 ; According to the segment sequence m 2 Use CRC encoder 2 to generate check sequence c 2 (Not shown), the segment sequence m 2 And check sequence c 2 Combine to generate code word sequence c′ 2 ; According to the segment sequence m 3 Use CRC encoder 3 to generate check sequence c 3 (Not shown), the segment sequen...

Embodiment 3

[0118] In the third embodiment, the first encoder adopts a non-linear block code Hash encoder, such as Figure 6A Shown is a schematic diagram of a polarization code encoding provided by Embodiment 3 of the present invention. Figure 6A It can be seen that the sender first divides the information sequence m to be encoded into I segment sequences according to the segmentation strategy confirmed by the sender and receiver, and mark the segment sequence as {m 1 ,m 2 ,...,m I }. Then, according to the segment sequence m 1 And the preset output value S of Hash encoder 1 known to both the sender and the receiver 1 Use Hash encoder 1 and truncation function T1 to generate hash sequence h 1 (Not shown), then the sequence m will be segmented 1 And the hash sequence h 1 Combine to generate code word sequence c′ 1 .

[0119] Specifically, when generating the hash sequence h 1 When, on the one hand, the segment sequence m 1 Convert it into a decimal value and input Hash encoder 1, on the other...

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Abstract

Embodiments of the invention relate to the technical field of communication, and specifically relates to coding and decoding methods and apparatuses of a polar code. The coding method includes steps:segmenting a to-be-coded information sequence according to a segmentation policy confirmed by both transmitting and receiving parties, and generating I segmentation sequences mi; for any segmentationsequence mi, generating a first verification sequence according to the segmentation sequence mi and a first encoder corresponding to the segmentation sequence mi, and combining the segmentation sequence mi and the first verification sequence to form a first code word sequence; and combining I first code word sequences to obtain a second code word sequence, and performing polar code coding on the second code word sequence. Any segmentation sequence mi is verified during decoding, the decoding is terminated if the verification is not passed, the verification is not performed after the whole information sequence is obtained through decoding, the false alarm rate and the block error rate can be reduced, and the time delay of decoding can be reduced.

Description

Technical field [0001] The embodiment of the present invention relates to the field of communication technology, and in particular to a polarization code encoding and decoding method and device. Background technique [0002] Currently, with 4G(the 4 th Generation mobile communication technology, the fourth-generation mobile communication technology) has entered the stage of large-scale commercial use, and the future-oriented fifth-generation mobile communication technology 5G (5 th Generation, the fifth generation) has become a hot spot for global research and development. Determining a unified 5G concept and formulating a global unified 5G standard have become the common voice of the industry. As the 5G eMBB (Enhanced Moblie BroadBand, enhanced mobile bandwidth) scene control channel coding scheme, Polar Codes (Polar Codes) is a new coding method that can achieve binary symmetrical channel capacity and has excellent decoding performance. [0003] The polarization code encoding a...

Claims

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Application Information

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IPC IPC(8): H03M13/13H04L1/00
CPCH03M13/13H04L1/0057H04L1/0061
Inventor 陈佩瑶王加庆白宝明孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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