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Balanced random puncturing method for two-sided physical layer network coding in fading channels

A fading channel and network coding technology, which is applied in the direction of adjusting channel coding, adjusting transmission mode, transmission modification based on link quality, etc., to achieve good performance advantages and obvious performance gains

Active Publication Date: 2022-01-14
FUQING BRANCH OF FUJIAN NORMAL UNIV
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AI Technical Summary

Problems solved by technology

At present, in the case of wireless fading channels, how to puncture the physical layer network codes on both sides to improve the code rate of codewords and obtain better coding performance, there is no excellent solution in the prior art

Method used

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  • Balanced random puncturing method for two-sided physical layer network coding in fading channels
  • Balanced random puncturing method for two-sided physical layer network coding in fading channels
  • Balanced random puncturing method for two-sided physical layer network coding in fading channels

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Embodiment Construction

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0067] Such as figure 1 , is a flow chart of steps of a balanced random puncturing method for both sides type physical layer network coding under a fading channel of the present invention, comprising the following steps:

[0068] Step 1. Calculate the codeword length NP that needs to be punctured, and the calculation formula is:

[0069]

[0070] Where K is the information bit length of the codeword, R t is the target code rate of the codeword; R o is the ori...

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Abstract

The invention belongs to the technical field of digital communication, and in particular relates to a balanced random puncturing method for two-side type physical layer network coding in a fading channel. The method of the present invention comprises the following steps: step 1, calculate the codeword length that needs to be punctured; step 2, calculate the codeword length that source point A and source point B need to puncture respectively; Step 3, calculate the codeword length to be punctured length; step 4, initialize the signal received by relay R; step 5, perform balanced random puncturing operation on the codeword of source point A; step 6, perform balanced random puncturing operation on the codeword of source point B. The method of the present application combines two-sided physical layer network coding and puncturing methods for fading channels to form a two-sided physical layer network coding with excellent code rate that can be adaptively adjusted, and unbalanced random puncturing method and CLS Compared with the puncturing method, the performance gain of the codeword designed by this method is obvious.

Description

technical field [0001] The invention belongs to the technical field of digital communication, and in particular relates to a balanced random puncturing method for two-side type physical layer network coding in a fading channel. Background technique [0002] In time-varying, high-mobility wireless communication systems, there are two effective ways to improve system throughput: one is physical layer network coding technology, and the other is code rate adaptive technology. [0003] Physical layer network coding can map the signals sent by two sources received at the same time to realize network coding, so as to turn the message interference between the source points into a useful signal to improve the throughput of the wireless communication system. Physical layer network coding The combination with channel coding has become one of the current research hotspots. In the current research, many channel codes have been used in combination with physical layer network codes, such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0076H04L1/0007H04L1/0009H04L1/0061
Inventor 游莹陈平平林捷
Owner FUQING BRANCH OF FUJIAN NORMAL UNIV
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