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

Method and device for reducing mutual interference of multiple carriers

A mutual interference and multi-carrier technology, applied in the field of multi-carrier mutual interference processing, to achieve the effect of improving flexibility, performance and business capacity

Active Publication Date: 2011-03-30
ZTE CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no solution to the mutual interference of multi-carriers in the wireless communication system in the industry

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
  • Method and device for reducing mutual interference of multiple carriers
  • Method and device for reducing mutual interference of multiple carriers
  • Method and device for reducing mutual interference of multiple carriers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The basic idea of ​​the present invention is: in a multi-carrier system, especially between adjacent multi-carriers in the frequency domain, there will be mutual interference among the carriers. The invention adjusts the phase of the modulated signal of each carrier to control the interference between multi-carriers to the level that can correctly demodulate the effective signal in the modulated signal. Since the phase of the modulated signal is related to the carrier frequency and initial phase of the carrier, and the carrier frequency is basically planned by the communication system, it is a non-adjustable parameter. Therefore, the present invention mainly adjusts the initial phase of the modulated signal To reduce the interference between multiple carriers. The scheme of the invention is simple and practical to implement.

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further de...

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 method for reducing mutual interference of multiple carriers, comprising the following steps: adjusting the phase of the modulated signal; modulating the baseband signal to the modulated signal; and judging whether the baseband signal can be correctly demodulated, if not, continuously adjusting the phase of the modulated signal, and if so, taking the current phase value as the phase value of the modulated signal of the baseband signal. The invention simultaneously discloses a device for reducing mutual interference of the multiple carriers. The invention especially obviously improves the performance under the condition of adjacent configuration of multiple carriers, ensures that multiple carriers can simultaneously work in the same wireless signal coverage area and greatly improves the frequency spectrum utilization ratio.

Description

technical field [0001] The invention relates to a processing technology for multi-carrier mutual interference in a communication system, in particular to a method and device for reducing multi-carrier mutual interference. Background technique [0002] At present, most wireless communication systems can support a multi-carrier working mode. The multi-carrier mode means that both transmission and reception will be combined waves of multiple single carriers. For example, for a CDMA2000 1x communication system in the 800MHz frequency band, the bandwidth of a single carrier is 1.23MHz, and the center frequency interval of adjacent carriers is 1.23MHz, so when multiple carriers such as three carriers are adjacent to each other, they are three single carriers with a bandwidth of 1.23MHz. A combined wave occupying a bandwidth of about 3.69MHz is formed, and the center frequencies of the three carriers can be set to 871.11MHz, 872.34MHz, and 873.57MHz (or other frequencies). figure ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00
CPCH04L5/0021H04J11/0023H04L25/03821H04L27/2647
Inventor 毕文仲劳锦明李凡龙
Owner ZTE CORP
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