A 5G broadcast channel merging receiving method based on a polarization code

A technology of broadcast channel and receiving method, applied in the field of channel coding and decoding, can solve problems such as inability to combine, and achieve the effects of improving reliability, increasing gain, and reducing delay

Active Publication Date: 2019-06-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the technical defect that the information bits in different transmission blocks in different transmission blocks in the 5G broadcast channel are not completely the same and cannot be combined before decoding. In , the soft information is combined for the same bits between the transmission blocks, and the bits are judged according to the combined soft information; for different bits, each transmission block is judged according to its own soft information, without increasing the decoding delay. Improve broadcast channel decoding accuracy

Method used

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  • A 5G broadcast channel merging receiving method based on a polarization code
  • A 5G broadcast channel merging receiving method based on a polarization code
  • A 5G broadcast channel merging receiving method based on a polarization code

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Embodiment 1

[0066] This embodiment includes 4 transmission blocks at the sending end, and each transmission block contains an information sequence u with a length of 32 bits, wherein 29 bits are the same information bits, and 3 bits are different information bits, and each transmission block has an information sequence u Add a 24-bit CRC check code, perform polar coding and BPSK modulation, and transmit in the AWGN channel, where the code length is 128 bits. At the receiving end, the polar code-based 5G broadcast channel combination receiving method proposed by the present invention is used for decoding. The relationship curve of SNR and BLER is obtained by simulating the communication link. At the same time, the effect of the present invention is verified by comparing with the BLER obtained by receiving and simulating each transmission block separately under the same conditions. figure 1 It is the scrambling and encoding process in the encoding process of "a method for combining and rec...

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Abstract

The invention relates to a 5G broadcast channel merging receiving method based on a polarization code, and belongs to the technical field of channel coding and decoding. The method comprises the stepsof estimating the reliability degree of each sub-channel at the sending end by using Gaussian approximation; mapping the same information bit of each transmission block into an information bit sub-channel with lower reliability; mapping different information bits into information bit sub-channels with higher reliability, respectively judging different information bits and transmission blocks at areceiving end, and merging soft information of the transmission blocks and uniformly judging for the same information bit. According to the invention, the decoding accuracy is effectively improved, and the time delay of successful reception of the broadcast channel is reduced.

Description

technical field [0001] The invention relates to a method for combining and receiving 5G broadcast channels based on polar codes, and belongs to the technical field of channel coding and decoding. Background technique [0002] The fifth generation communication system (5G) was created in order to meet the demands of a sharp increase in data traffic and device connections, and ultra-low latency. In order to meet the requirements of these indicators, 5G must make breakthroughs in various technologies. Due to interference and fading in wireless channels, errors may occur during signal transmission. Channel coding technology resists and corrects errors caused by bad channels by increasing information redundancy. An efficient coding and decoding scheme can reduce system service overhead, increase network coverage and reliability of data transmission, and improve spectrum efficiency. Constructing a channel coding algorithm that can reach or approach the system channel capacity an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/18
Inventor 费泽松王新奕孙策
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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