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

Virtual array antenna signal generating method based on high-speed mobile communication

A virtual array, antenna signal technology, applied in diversity/multi-antenna system, radio transmission system, space transmit diversity and other directions, can solve the problem of performance degradation of communication system, and achieve the effect of high gain, high anti-interference ability and optimized performance

Inactive Publication Date: 2016-08-17
GUILIN UNIV OF ELECTRONIC TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is a Doppler frequency shift in the existing high-speed mobile communication, thereby degrading the performance of the communication system, and a method for generating a virtual array antenna signal based on high-speed mobile communication is provided

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
  • Virtual array antenna signal generating method based on high-speed mobile communication
  • Virtual array antenna signal generating method based on high-speed mobile communication
  • Virtual array antenna signal generating method based on high-speed mobile communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A method for generating virtual array antenna signals based on high-speed mobile communications, such as figure 1 As shown, the specific implementation steps are as follows:

[0021] Step 1. Determine appropriate virtual array antenna signal parameters, assuming N elements of the virtual array antenna, and the phase difference of adjacent element signals is Δψ.

[0022] Step 2, input the sampled original signal to the digital phase-locked loop chip for frequency tracking, and obtain the same component I of the carrier signal containing Doppler frequency shift r (n) and quadrature component Q r (n).

[0023] Step 3, according to the obtained same component I r (n) and quadrature component Q r (n), calculate the instantaneous phase φ(n):

[0024] φ ( n ) = a r c t g Q r ...

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 generating a virtual array antenna signal based on high-speed mobile communication, which obtains a virtual array antenna with N array elements by phase shifting and uniform phase interval sampling of a single group of I and Q signals received by a single antenna Signals, and then by beamforming the virtual array signals, the communication system can obtain array gain without adding hardware resources, and also compensate for Doppler frequency shift. The invention is beneficial to realize the method of optimizing high-speed mobile communication performance without increasing hardware burden, and has the characteristics of high gain and high anti-interference ability.

Description

technical field [0001] The invention relates to the technical field of high-speed mobile communication, in particular to a method for generating a virtual array antenna signal based on high-speed mobile communication. Background technique [0002] The Doppler frequency shift phenomenon was discovered by Christian Johann Doppler in 1842, which proved that as long as there is a relative movement between the radiation source and the observation, the frequency of the observed signal will change. For wireless communication, the Doppler frequency shift causes an error in the estimation of the carrier frequency, which leads to the performance degradation of the communication system. For example, the Orthogonal Frequency Division Multiplexing (OFDM) system is very sensitive to frequency offset. Doppler frequency shift and Doppler spread are more significant in the high-speed mobile environment. Frequency shift destroys the orthogonality between subcarriers of OFDM system, resulting ...

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): H04B7/04H04B7/06
CPCH04B7/0408H04B7/0617
Inventor 唐智灵李思敏周相君
Owner GUILIN UNIV OF ELECTRONIC TECH
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