Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for measuring signal-to-noise ratio of system

A signal-to-noise ratio and channel technology, applied in the field of communication, can solve problems such as consuming system resources, reducing system operating efficiency, and affecting overall system performance, so as to improve execution efficiency, save computing resources, and improve system performance.

Active Publication Date: 2013-12-04
ZTE CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a huge amount of computation, which consumes too much system resources to a certain extent, reduces the operating efficiency of the system, and affects the overall performance of the system.

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 measuring signal-to-noise ratio of system
  • Method and device for measuring signal-to-noise ratio of system
  • Method and device for measuring signal-to-noise ratio of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In a wireless communication system based on OFDM technology, when measuring the system signal-to-noise ratio, in order to effectively save system resources, in the embodiment of the present invention, the signal received from the specified access code (Ranging) area is extracted from the OFDM signal received by the transmitting end. The Ranging subcarrier sequence; then the Ranging subcarrier sequence and the locally generated pseudo-random code sequence are correlated to obtain the corresponding correlation sequence, and the power value of each sampling point in the correlation sequence is calculated; then, according to each The power value of the sampling points is calculated for the total received signal power of the Ranging subcarrier sequence, and the peak sample points are screened out from each power value, and the effective signal total power is calculated according to each peak sample point; finally, according to the obtained received signal The total power of t...

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

A method for measuring channel signal-to-noise ratio (SNR) is provided by the present invention, which includes: extracting a Ranging sub-carrier sequence received from the designated access code (Ranging) area from Orthogonal Frequency Division Multiplexing (OFDM) signals received from a transmitting side; performing a correlation operation on the Ranging sub-carrier sequence and a pseudo-random code sequence locally generated to obtain the corresponding correlation sequence, and calculating power value of each sample point in the correlation sequence; calculating total power of the receiving signal and effective signal of the Ranging sub-carrier sequence according to the power value of each sample point; calculating total power of the noise signal according to the obtained total power of the receiving signal and the effective signal, and obtaining the system SNR according to the total power of the effective signal and the noise signal. Also, a device for measuring the system SNR is provided by the present invention. By applying the present invention, the system operation resource can be saved effectively, the system execution efficiency can be improved, and the system performance can be promoted.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for measuring the signal-to-noise ratio of a system. Background technique [0002] At present, the Orthogonal Frequency Division Multiplexing (OFDM) technology has been widely used in the third-generation communication systems due to its strong anti-multipath capability and high spectrum utilization efficiency. In the wireless communication system based on OFDM technology, a very key technology is Adaptive Modulation and Coding (Adaptive Modulation and Coding) technology, which can adaptively select the modulation mode and coding according to the channel state information way, thus maximizing system throughput and ensuring the target frame error rate. To adopt adaptive modulation and coding technology, it is necessary to measure the signal-to-noise ratio of the system. [0003] In the traditional technical solutions, the method usually used for SNR measurement is: ...

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 Patents(China)
IPC IPC(8): H04L27/26H04B17/00
CPCH04L27/2647H04L1/20
Inventor 陈永健
Owner ZTE CORP