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Polar code encoding cooperation based on inverse code word Plotkin construction and information bit re-hibernation

An information bit and coding technology, applied in the field of channel coding, can solve problems such as blank and slow fading channels without obvious system benefits

Active Publication Date: 2016-11-09
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0004] In recent years, many scholars have conducted research on the basic mechanism of coding cooperation and the principle of coding and decoding of Polar codes, but the research on coding cooperation based on Polar codes is almost blank. Only Saqib Ejaz has found that the AWGN channel based on A non-systematic Polar code coding scheme constructed by Plotkin, but this scheme does not obtain obvious systematic benefits in slow fading channels

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  • Polar code encoding cooperation based on inverse code word Plotkin construction and information bit re-hibernation
  • Polar code encoding cooperation based on inverse code word Plotkin construction and information bit re-hibernation
  • Polar code encoding cooperation based on inverse code word Plotkin construction and information bit re-hibernation

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Embodiment Construction

[0091] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0092] 1. System model

[0093] like figure 1 As shown, in the coding cooperation system, different parts of a codeword of a frame, that is, codewords, will be allocated and transmitted among users, and the code rate of this frame of codewords in the whole system is the same as that under the condition of no cooperation, so that Does not take up additional system resources.

[0094] like figure 2 As shown, in the time division multiple access channel, during coding cooperation, each user performs channel coding on K-bit information (which has been coded by cyclic redundancy check (cyclic redundancy code, CRC)) to generate N-bit codeword information C (code rate K / N), and then divide the N-bit codeword into N through a certain codeword construction method 1 bit code word C 1 and N 2 bit code word C 2 , and put the C in it in its own mult...

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Abstract

The invention relates to the technical field of channel encoding, in particular to Polar code encoding cooperation based on inverse code word Plotkin construction and information bit re-hibernation. The encoding cooperation based on Polar codes is researched from the aspects of sub-code word construction way, performance optimization and the like. Plotkin construction is performed on non-system Polar inverse code words from the aspect of sub-code word construction to obtain an encoding cooperation method based on inverse sub-code words, so that the performance of non-system Polar code encoding cooperation is improved remarkably under a fading channel. From the aspect of performance optimization, an information bit re-hibernation mechanism is introduced by analysis of a decoding feature of the inverse sub-code word, so that the cooperation benefit is increased; and then, encoding cooperation based on non-system Polar codes is extended to encoding cooperation based on system Polar codes. The method and the system have the beneficial effects that the inverse code word Plotkin construction, the information bit re-hibernation and the system Polar codes are introduced, so that the performance of the Polar codes is improved remarkably compared with the prior art under a slow fading channel.

Description

technical field [0001] The present invention relates to the technical field of channel coding, in particular to a Polar code coding cooperation based on the Plotkin construction of an inverted code word and information bit weight dormancy. Background technique [0002] The 5G communication system requires ultra-high-speed information transmission, which requires increasing system capacity and reducing system complexity. Diversity is an effective measure against channel fading in wireless communication, which can improve system capacity, and multiple input multiple output (MIMO) space diversity is a commonly used implementation. In practical applications, due to size constraints, it is difficult to install multiple antennas in a mobile terminal. The virtual MIMO effect can be realized with the help of cooperative transmission between users. The cooperative communication methods mainly include amplification and forwarding, decoding and forwarding, and coding cooperation. The...

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0013H04L1/0077
Inventor 吴绍华李坤董丹焦健张钦宇
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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