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A Channel Coding Recognition Method Based on Maximum Likelihood Decoding

A channel coding and maximum likelihood technology, applied in the field of channel coding identification based on maximum likelihood decoding, can solve the problem of inability to judge whether the decoder coding candidates are correct, and achieve the effect of speeding up the blind decoding process

Inactive Publication Date: 2020-12-11
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of channel decoding, it is impossible to judge whether the coding candidate adopted by the decoder is correct, and it can only be judged in the CRC check link after decoding.

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  • A Channel Coding Recognition Method Based on Maximum Likelihood Decoding
  • A Channel Coding Recognition Method Based on Maximum Likelihood Decoding
  • A Channel Coding Recognition Method Based on Maximum Likelihood Decoding

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Embodiment Construction

[0026] The present invention will be further described below through specific embodiments and accompanying drawings. The embodiments of the present invention are for better understanding of the present invention by those skilled in the art, and do not limit the present invention in any way.

[0027] Viterbi decoding is a typical maximum likelihood decoding method for convolutional codes. Let's take the Viterbi decoding of convolutional code as an example, combined with the attached figure 1 The above-mentioned technical features and advantages of the present invention will be further described.

[0028] Assume that the sending end has M possible coding candidates C to form a coding candidate set Ω, Ω={C 1 ,C 2 ,...,C M}Each encoding candidate may contain different convolutional code structures and code rates. The receiver needs blind decoding to determine which candidate to use at the sender.

[0029] In order to achieve the above object, the steps of the present inventi...

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Abstract

The invention relates to a channel coding parameter recognition technology of an adaptive modulation coding technology, and discloses a channel coding recognition method based on maximum likelihood decoding. According to the method, an information sequence required by receiving equipment is acquired through an optimized decoding process after acquisition of a soft information sequence output by ademodulator. Through adoption of the method, recognition of an invalid decoding flow in a channel blind decoding process is realized so as to speed up a channel coding blind decoding process.

Description

technical field [0001] The invention belongs to the field of intelligent communication, and relates to a channel coding parameter identification technology of an adaptive modulation coding technology, in particular to a channel coding identification method based on maximum likelihood decoding. Background technique [0002] Adaptive modulation and coding (AMC) technology is often used in wireless communication to improve transmission efficiency and alleviate the problem of channel resource shortage. AMC technology can adaptively change transmission parameters according to actual channel quality, such as modulation mode and its parameters, channel coding mode and its parameters, and so on. In order to support the AMC technology, the sending end usually needs to transmit AMC parameters through a control channel, so as to facilitate demodulation and decoding at the receiving end. However, for the AMC demodulation and decoding of the control channel itself, the blind recognition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0021H04L1/0026H04L1/0038H04L1/004
Inventor 李雨朦刘强
Owner TIANJIN UNIV