Encoding and decoding method and device in cognitive wireless network

A technology of cognitive wireless network and coding method, applied in the direction of digital transmission system, error prevention, electrical components, etc., can solve the problems of low reliability of information transmission, insufficient performance of channel coding error protection, high coding complexity at the sending end, etc. , to achieve the effect of reducing the coding complexity

Active Publication Date: 2018-09-28
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The existing encoding and decoding implementation methods are often combined with optimal source coding and optimal channel coding. The disadvantages are: 1. The coding complexity at the sending end is high; Sensitive, if the error protection performance of channel coding is not good enough, when the channel conditions suddenly deteriorate, some sporadic errors in the data frame will cause the entire data frame to be unable to be decoded correctly, so the reliability of information transmission is not high

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  • Encoding and decoding method and device in cognitive wireless network
  • Encoding and decoding method and device in cognitive wireless network
  • Encoding and decoding method and device in cognitive wireless network

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[0062] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] In the encoding and decoding method and device in the cognitive wireless network provided by the present invention, the working mode of the cognitive wireless network is the Overlay mode. The encoding and decoding methods and devices in the cognitive wireless network of the present invention will be described in detail below with reference to the accompanying drawings.

[0064] ...

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Abstract

The invention provides an encoding and decoding method and device in a cognitive wireless network. The encoding method comprises that a sending end divides information source data into multiple data blocks with lengths of n, wherein the n is an integer more than 0; the sending end performs compression encoding on each data block with the length of n by using a m*n measuring matrix in order to obtain a data frame with a length of m, wherein the m is an integer more than 0; and the sending end transmits the data frame in the form of broadcasting. The encoding and decoding method and device in the cognitive wireless network may reduce the complexity of the sending end and improve information transmission reliability in the cognitive wireless network.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a coding and decoding method and device in a cognitive wireless network. Background technique [0002] Aiming at the current situation of lack of spectrum resources and incomplete spectrum utilization, cognitive wireless network technology has emerged as the times require, and has attracted widespread attention from the international community. The emergence of cognitive wireless networks can improve the spectrum utilization of existing communication networks and system capacity. The cognitive wireless network is composed of the main network and the cognitive network. The main network refers to the existing communication network. Users in the main network have been authorized to work in a certain frequency band. The cognitive network is a network without an authorized frequency band. Users in the network can share the authorized frequency band in the main network ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/00
CPCH04L1/0042H04L27/0006
Inventor 徐文波王思野林家儒王一凡郭文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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