Channel coding method improving transmission reliability of non-line of sight millimeter wave indoor communication system

A communication system and channel coding technology, which is applied in the field of channel coding to improve the reliability of non-line-of-sight millimeter wave communication systems, can solve problems such as poor signal diffraction ability, large signal transmission attenuation, and small effective receiving area of ​​antennas, etc., to achieve improved The effect of improving transmission reliability and adaptability

Inactive Publication Date: 2015-09-16
李焱
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing millimeter wave wireless communication system, due to the large transmission attenuation of the signal, the signal diffraction ability is poor,...

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
  • Channel coding method improving transmission reliability of non-line of sight millimeter wave indoor communication system
  • Channel coding method improving transmission reliability of non-line of sight millimeter wave indoor communication system
  • Channel coding method improving transmission reliability of non-line of sight millimeter wave indoor communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] A typical millimeter wave wireless communication system transmitter such as figure 1 shown. exist figure 1 The error correction code in the shown transmitter is used to improve communication reliability, the (n, k) error correction code generates m-bit redundant data according to k-bit user data, k-bit user data and m-bit redundant data For an n-bit codeword, the encoding rate is k / n. If the error correction capability of the (n,k) code is d, all n bits of data can be completely recovered even if d bits of a codeword are wrong during transmission. The error correction ability of the error correction code is related to many factors, one of which is the length n of the code word. Under the condition of a fixed code rate, usually the larger n is, the stronger the error correction ability of the code word is. The above k, m, n and d are all positive integers.

...

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 channel coding method improving transmission reliability of a non-line of sight millimeter wave indoor communication system, and brings forward a method that a variable-code-length low-density check code is used to improve communication reliability of a millimeter wave communication system. An error correction system is mainly adopted to generate different-length redundant data on user data having different bit numbers at the same coding rate, the user data and the redundant data are combined to form error correction codes having different code lengths, at least one bit of control information is used in a signaling domain to indicate a selected code length of current transmission, a transmitter selects a code length capable of providing and guaranteeing communication reliability according to various communication channels and quality of a transmission signal, code length information is transmitted to a receiver through control information, and the receiver uses the error correction codes corresponding to the code length to decode the data according to the received control information. The channel coding method effectively improves adaptability of a millimeter wave wireless communication system on a change of the transmission channel, and then transmission reliability of the system is improved.

Description

technical field [0001] The invention relates to a channel coding method, in particular to a channel coding method for improving the reliability of a non-line-of-sight millimeter wave communication system Background technique [0002] In the field of wireless communication, the frequency of millimeter wave is above 30GHz. Compared with the frequency band with lower frequency, the millimeter wave frequency band has abundant bandwidth resources. Therefore, the millimeter wave communication system can increase the data transmission rate of the communication system by expanding the bandwidth of the communication channel. . However, because of its high frequency, the millimeter wave will have greater air attenuation and transmission attenuation during transmission. The shorter wavelength of the signal results in poor diffraction ability and easy scattering during signal transmission, especially in indoor non-line-of-sight transmission. These all cause the communication channel fa...

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): H04L1/00
CPCH04L1/004H04L1/0046
Inventor 李焱黄锋
Owner 李焱
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