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Multistage bit interleaved coded modulation method based on polarization code

A technology of bit interleaving and coding and modulation, which is applied in the field of coding and modulation in wireless communication

Active Publication Date: 2020-06-26
SOUTHEAST UNIV +1
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Problems solved by technology

However, there is currently no MLBICM based on polar codes

Method used

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  • Multistage bit interleaved coded modulation method based on polarization code
  • Multistage bit interleaved coded modulation method based on polarization code
  • Multistage bit interleaved coded modulation method based on polarization code

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Embodiment Construction

[0077] In order to describe the technical solution disclosed in the present invention in detail, further elaboration will be made below in conjunction with the accompanying drawings and specific embodiments.

[0078] The MLBIPCM method proposed by the present invention is mainly aimed at the communication system under the complex Gaussian channel, and includes two parts: polar code coding and the design of mapping rules from bits to symbols. In polar code coding, firstly, by designing the sub-modulation order of each level, the traditional binary kernel can be used for polar code coding at each level, avoiding punching holes and constructing multi-core polar codes, and ensuring polar codes polarization performance. Then, the reliability of the bit-polarized channel is calculated through extrinsic information transfer (EXIT), and a highly reliable bit-polarized channel is selected for transmission of information bits to complete polar code encoding. The bit-to-symbol mapping r...

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Abstract

The invention discloses a multi-stage bit interleaved coded modulation method based on a polarization code, which mainly aims at a communication system under a complex Gaussian channel and comprises two parts of contents: polarization code coding and design of a bit-to-symbol mapping rule. In polar code coding, firstly, by designing sub-modulation orders of all levels, a traditional binary kernelcan be used for polar code coding of all levels, punching and construction of a multi-core polar code are avoided, and the polarization performance of the polar code is guaranteed. And then, calculating the reliability of the bit polarization channel through external information transfer, and selecting the high-reliability bit polarization channel to transmit information bits, thereby finishing polarization code coding. The design of a bit-to-symbol mapping rule mainly aims at mapping of a symmetric constellation diagram, and is hybrid mapping of joint set decomposition and Gray mapping. According to the invention, by designing the mapping rule from bits to symbols, the polarization performance can be improved to the maximum extent, so that the group error rate performance of the system isimproved.

Description

technical field [0001] The invention belongs to the technical field of coding and modulation in wireless communication, and in particular relates to a multi-level bit interleaving coding and modulation method based on polar codes. Background technique [0002] The coding and modulation technology based on polar code refers to the combination of polar code and high-order modulation, so as to improve the spectral efficiency of the communication system. A coding and modulation technology based on polar codes is multilevel polar coded modulation (multilevel polar coded modulation, MLPCM). for 2 m (m=1,2,3,4,...) digital modulation, MLPCM divides the input data stream into m priority levels, and decodes them sequentially at the receiving end. There are m encoders and m decoders at the sender and receiver respectively. This coded modulation technique can achieve channel capacity. However, as the modulation order increases, a large number of encoders and decoders increase hardw...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0071H04L1/0057
Inventor 潘志文胡耀月刘楠尤肖虎
Owner SOUTHEAST UNIV
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