Channel coding and decoding system and a channel coding and decoding method for deep space communication system

A deep space communication, coding and decoding technology, applied in transmission systems, digital transmission systems, phase modulation carrier systems, etc., to achieve the effect of improving communication quality, equivalent decoding performance, and consistent complexity

Active Publication Date: 2019-07-05
XIDIAN UNIV
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Problems solved by technology

For binary-input discrete memoryless channels (B-DMCs), under the serial cancellation (SC) decoding algorithm, polar codes (Polar codes) are the first codes that are proven to be able to achieve channel capacity, where polar codes are There is no real application in the scene

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  • Channel coding and decoding system and a channel coding and decoding method for deep space communication system
  • Channel coding and decoding system and a channel coding and decoding method for deep space communication system
  • Channel coding and decoding system and a channel coding and decoding method for deep space communication system

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Embodiment Construction

[0044] Attached below Figure 1 to Figure 6 The embodiments of the present disclosure are described in detail.

[0045] It should be clear that the described embodiments are only some of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

[0046] In one embodiment, the present disclosure provides a deep space communication channel encoding and decoding system, such as figure 1 As shown, the system includes the following modules:

[0047] Encoding modules for:

[0048] (1) The Tal-Vardy construction method is used to obtain polarized sub-channels through channel evolution and channel degradation operations, including:

[0049] a. Define the fusion function y of the evolutionary approximation 1 = urgrading_merge(W, μ) and the fusion function y of the...

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Abstract

The invention discloses a channel coding and decoding system and a channel coding and decoding method for a deep space communication system, and relates to the technical field of communication. Polarization codes are selected as a deep space communication channel coding and decoding scheme, a deep space communication channel model is provided, and a polarization code for the channel model is constructed by using a Tal-Vardy method. Through simulation, a conclusion is obtained as follows: when the signal to noise ratio is low, the polarization code is used as the channel coding and decoding ofthe deep space communication system, so that the communication quality can be effectively improved, and the improved E-SCL decoding algorithm has, the frame error rate lower than that of the SC decoding algorithm, and the frame error rate of the improved E-SCL decoding algorithm is equivalent to that of the SCL decoding algorithm.

Description

technical field [0001] The present disclosure relates to the field of communication technology, in particular to a deep space communication channel encoding and decoding system and method thereof. Background technique [0002] Deep space communication refers to wireless communication between probes that are farther than earth satellites or between probes and the earth. Its basic forms include communication between earth stations and spacecraft and communication between spacecraft. With the advent of the 21st century, deep space exploration technology, as the only means for human beings to protect the earth, enter the universe, and find a new home for life, has attracted great attention from all countries in the world. For a long time, some developed countries such as the United States, Russia and the European Union have invested a lot of manpower, material resources and financial resources to expand their deep space exploration capabilities. China started the "Chang'e" lunar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/18H04B7/185
CPCH04B7/18506H04L1/0054H04L1/0057H04L27/18
Inventor 邢莉娟李卓张研
Owner XIDIAN UNIV
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