Polarization code-based synchronization-free communication method, device and system

A communication method and polar code technology are applied in the field of error correction coding and decoding, which can solve the problems of inability to receive sequence decoding of codewords and poor communication quality.

Active Publication Date: 2020-04-17
HUAZHONG UNIV OF SCI & TECH
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a synchronization-free communication method, device and system based on polar codes. When the number of phase value combinations is

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polarization code-based synchronization-free communication method, device and system
  • Polarization code-based synchronization-free communication method, device and system
  • Polarization code-based synchronization-free communication method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0074] In order to achieve the above object, in the first aspect, the present invention provides a synchronization-free communication method based on polar codes, such as figure 1 shown, including the following steps:

[0075] S1. The sending end performs polar code encoding on the information bit sequence, modulates to form a sending signal, and then sends it to the receiving end;

[0076] Sp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a polarization code-based synchronization-free communication method, device and system. A receiving end adopts a combination of a plurality of groups of preset signal startingtime, modulation center frequency and channel phase, timing sampling, frequency offset correction and phase correction processing are carried out on the received signals, and after demodulation, P' code word receiving sequences are obtained; based on a divide-and-conquer thought, each P code word receiving sequences in the P' code word receiving sequences are decoded at the same time to obtain P'/P decoding results, a decoding result which is most likely to be a correct code word is selected from the obtained decoding results based on a maximum likelihood principle, the validity is judged, andif yes, information in the decoding result is extracted to complete communication. The method is not limited by the number of code word receiving sequences which can be processed by a multi-codewordreceiving sequence SCL decoder under the condition that the number of value combinations of the sampling starting position, the carrier frequency offset and the carrier phase is large, and the communication quality is high.

Description

technical field [0001] The invention belongs to the technical field of error correction coding and decoding, and more specifically relates to a polar code-based synchronization-free communication method, device and system. Background technique [0002] Synchronization is a key technical link in the communication system. Only when the sending and receiving parties are synchronized in the three aspects of signal start time, modulation center frequency and channel phase, can communication be carried out normally. In order to realize synchronous communication, the existing method embeds a synchronous sequence in the communication signal to be sent, and the synchronous sequence provides the receiver with the signal start time, modulation center frequency and channel phase of the sender. In the communication process, the synchronization sequence consumes precious channel resources and reduces the spectrum utilization efficiency. On the other hand, the use of synchronization seque...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03M13/01H04L1/00
CPCH03M13/01H04L1/0057
Inventor 屈代明陈欣达江涛
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap