Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Zero padding mode-based CI-OFDM communication method

A technology of CI-OFDM and communication method, which is applied in the direction of digital transmission system, electrical components, and error prevention, etc. It can solve the problems of system bit error rate performance reduction, received information loss, etc., and achieve the effect of improving system bit error rate performance

Inactive Publication Date: 2010-12-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional CI-OFDM system uses a cyclic prefix (Cyclic Prefix, CP) method to eliminate inter-symbol interference when adding a guard interval, and removes the data of the cyclic prefix at the receiving end, but this processing method will lead to the loss of part of the received information. loss, which reduces the performance of the system bit error rate

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
  • Zero padding mode-based CI-OFDM communication method
  • Zero padding mode-based CI-OFDM communication method
  • Zero padding mode-based CI-OFDM communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. It should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0024] The present invention provides a CI-OFDM communication method based on the zero-adding method, adopts the ZP method as the guard interval in the data transmission process, and performs detection in conjunction with the data symbols of the guard interval in the data reception process, thereby making full use of frequency diversity Gain, improving the system bit error rate performance. Compared with the traditional ca...

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 zero padding mode-based carrier interferometry orthogonal frequency division multiplexing (CI-OFDM) communication method, and belongs to the field of communication technology. The conventional CI-OFDM system eliminates intersymbol interference by using a cyclic prefix (CP) mode when adding a guard interval so as to remove the data of the cyclic prefix at a receiving end; but the processing method causes loss of part of received information so as to reduce the bit error rate of the system. The zero padding mode is adopted as the guard interval during the data transmission and detection is performed by combining the data symbol of the guard interval in the data receiving process, so the frequency diversity gain is fully utilized and the bit error rate of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a carrier interference OFDM (Carrier Interferometry Orthogonal Frequency Division Multiplexing, CI-OFDM) communication method. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) has been widely used in various WLANs, new generation cellular mobile communication systems, digital broadcasting and TV, etc. in high-speed data transmission systems. [0003] The main reason why OFDM can become the core technology of various mainstream standards is that it can convert frequency-selective fading channels into parallel flat-fading sub-channels by rationally designing system parameters, thus effectively combating inter-symbol interference (Inter-symbol interference). symbolInterference, ISI) while reducing the complexity of equalization processing at the receiving end. However, OFDM also loses the frequency multipath diversity gain. Therefore, when a sub...

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): H04L1/00H04L27/26
Inventor 高培王军李少谦
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com