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A rateless coding method and electronic device based on relative entropy under restricted feedback

A rateless encoding and relative entropy technology, applied in the field of wireless communication, can solve the problems of reduced decoding ability, reduced decoding algorithm complexity, and high decoding overhead, so as to ensure no reduction, ensure decoding ability, and improve decoding The effect of code performance

Active Publication Date: 2020-10-27
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0002] At present, there are many feedback-based rateless coding schemes, but only a few of the existing coding schemes consider the halfway decoding performance of the coding, and the coding that considers the midway decoding performance has a large decoding overhead; reduce the complexity of the decoding algorithm In addition, the decoding performance of existing codes in multicast channels and noisy channels is not satisfactory

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  • A rateless coding method and electronic device based on relative entropy under restricted feedback
  • A rateless coding method and electronic device based on relative entropy under restricted feedback
  • A rateless coding method and electronic device based on relative entropy under restricted feedback

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0058]The embodiment of the present invention provides a rateless encoding method based on relative entropy under restricted feedback, such as figure 1 As shown in FIG. 2 , it is a schematic flowchart of a rateless encoding method based on relative entropy under restricted feedback proposed by an embodiment of the present invention. This method is called REF code, and specifically includes the following steps:

[0059] S101, divide the data to be transmitted into several equal-length data blocks to obtain several input packets; set the decoding state vector of the input packets to be a zero vector; set the encoding packet set to an empty set;

[0060] It should be noted that the input packet is that the data to be transm...

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Abstract

The invention discloses a rateless coding method under limited feedback based on relative entropy and an electronic device, and the method comprises the steps: dividing to-be-transmitted data into a plurality of data blocks with the same length, so as to obtain a plurality of input groups; setting a decoding state vector of the input packet as a zero vector; setting the coding packet set as a nullset; searching to obtain the degree of the coded packet; wherein the degree of the coding group is the number of the input groups required for forming one coding group; randomly selecting input groups of which the number is equal to that of the coded groups, and carrying out corresponding operation to obtain coded groups; and sending the coded packet to a receiving end, and receiving feedback information. According to the method, the coding complexity is controlled to be linear, the decoding capability is ensured not to be reduced, and the decoding performance under unicast and multicast scenes, deletion and noise channels is improved at the same time.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a rateless encoding method and electronic equipment based on relative entropy under limited feedback. Background technique [0002] At present, there are many feedback-based rateless coding schemes, but only a few of the existing coding schemes consider the halfway decoding performance of the coding, and the coding that considers the midway decoding performance has a large decoding overhead; reduce the complexity of the decoding algorithm In addition, the decoding performance of existing codes in multicast channels and noisy channels is not satisfactory. Contents of the invention [0003] In view of this, the purpose of the present invention is to propose a rateless encoding method and electronic equipment based on relative entropy under limited feedback, to control the encoding complexity in the linear range, so as to improve the halfway decoding performance, and at the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/0047H04L1/0057H04L1/1607
Inventor 许文俊尚晋杨家欣高晖张平林家儒
Owner BEIJING UNIV OF POSTS & TELECOMM