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

Primary synchronization signal generation method and device and computer readable storage medium

A technology of master synchronization signal and generation device, which is applied in the direction of synchronization device, wireless communication, digital transmission system, etc. It can solve the problem that it is difficult to balance autocorrelation performance and anti-frequency offset performance, and the user terminal cannot quickly realize the base station time-frequency Synchronization, poor autocorrelation performance of the main synchronization signal sequence, etc., to achieve good autocorrelation characteristics, balanced against frequency offset, and balanced autocorrelation effects

Active Publication Date: 2020-06-16
SPREADTRUM COMM (SHANGHAI) CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, too many ZC sequences lead to poor autocorrelation performance of the generated master sync signal sequence
[0005] The existing schemes for generating the main synchronization signal sequence are difficult to balance the autocorrelation performance and the performance against frequency offset, and cannot resist the influence of frequency offset, so that the user terminal cannot quickly achieve time-frequency synchronization with the base station

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
  • Primary synchronization signal generation method and device and computer readable storage medium
  • Primary synchronization signal generation method and device and computer readable storage medium
  • Primary synchronization signal generation method and device and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In the prior art, it is difficult to balance the autocorrelation performance and the anti-frequency offset performance in the scheme of generating the primary synchronization signal sequence, and cannot resist the influence of the frequency offset, so that the user terminal cannot quickly realize the time-frequency synchronization with the base station.

[0032]In the embodiment of the present invention, the main synchronization signal is generated by using the ZC sequence connection of three root indexes, and the obtained main synchronization signal has good autocorrelation characteristics, can effectively resist the influence of frequency offset, and can effectively balance the autocorrelation and For the performance against frequency offset, the side peaks are suppressed at a lower value, which will not affect the detection of the main peak, so that the user terminal can be quickly synchronized with the time-frequency of the base station.

[0033] In order to make the...

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 primary synchronization signal generation method and device, and a computer readable storage medium. The method comprises the steps: acquiring ZC sequences corresponding to three root indexes, wherein the three ZC sequences have the same length; carrying out the discrete Fourier transform on the three ZC sequences to obtain frequency domain sequences in one-to-one correspondence with the three ZC sequences; respectively expanding the three frequency domain sequences to obtain expanded sequences in one-to-one correspondence with the frequency domain sequences; carryingout the inverse discrete Fourier transform on the three extended sequences to obtain time domain sequences in one-to-one correspondence with the extended sequences; and combining the three time domain sequences to obtain a main synchronization signal. The main synchronization signal generated by the scheme can balance the autocorrelation performance and the frequency offset resisting performance,and the time-frequency synchronization between the user terminal and the base station can be realized quickly.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for generating a master synchronization signal, and a computer-readable storage medium. Background technique [0002] Since the ZC sequence (Zadoff-Chu sequence) has good autocorrelation properties, a single ZC sequence is usually used when designing the main synchronization signal sequence. In narrowband low signal-to-noise ratio communication systems, such as IoT systems, it is usually necessary to design a longer master synchronization signal sequence. Since there may be a frequency offset between the transmitting end of the base station (eNB) and the receiving end of the user terminal, a single ZC sequence will cause the phase rotation of the received signal in the time domain, resulting in a sharp deterioration of the autocorrelation characteristics. For example, when the user terminal uses the local sequence for correlation detection, if th...

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): H04W56/00H04L27/00
CPCH04W56/001H04L27/0014H04L2027/0026
Inventor 杨殷周化雨张凯王琤
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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