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

Method and system of phase deviation measurement for testing TD-SCDMA terminal

A TD-SCDMA, phase deviation technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as reducing the detection efficiency of the detection device, and achieve the effect of improving the detection efficiency

Inactive Publication Date: 2007-09-19
湖北众友科技实业股份有限公司
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for TD-SCDMA terminal test system, this method has reduced the detection efficiency of the detection device under detection condition

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 system of phase deviation measurement for testing TD-SCDMA terminal
  • Method and system of phase deviation measurement for testing TD-SCDMA terminal
  • Method and system of phase deviation measurement for testing TD-SCDMA terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to make it easier for those skilled in the art to understand and implement the present invention, the present invention will be described in detail below through preferred embodiments with reference to the accompanying drawings.

[0027] First, refer to FIG. 2 , which is a flowchart of a method for implementing phase deviation measurement using a channel estimation code according to a preferred embodiment of the present invention. For the terminal of 3GPP TD-SCDMA system, in the embodiment of the present invention, a kind of method that utilizes channel estimation code to measure phase deviation is provided, comprises the following steps:

[0028] Referring to Figure 4, in step 1, the receiving device receives the signal, filters the received signal and demodulates it into I and Q two-way signals, performs correlation calculation on the I and Q two-way signals, and obtains the correlation peak value , according to the correlation peak value, determine the midam...

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 relates to a frequency offset measuring device and the method thereof used in the TD-SCDMA terminal test. The receiving device therein filters the received signal and quadraturaly demodulates the received signal into I and Q two paths of signals. Then the data demodulation device demodulates the launching data of users, and the phase judging device judges the 0 and 1 sequence. The signal recovery device recovers the reference signal and at last the phase offset obtaining device compares the phases of the data block of the received signal and the data block of the reference signal thus obtaining the chip phases offset values Delta*Phi*i and according to the formula Delta*Phi*i=Phi0+k*i*Phif, the over determined system is obtained and thus the phase offset Phi0 of the sudden time slot is obtained.

Description

technical field [0001] The present invention relates to a phase deviation measurement method and device for TD-SCDMA terminal testing, in particular, relates to the use of channel estimation codes to realize phase deviation measurement, and the invention is applicable to the phase deviation measurement of TD-SCDMA system terminals. Background technique [0002] The most notable feature of wireless mobile communication is the complexity and time-varying nature of its channels. In the receiving scheme, the receiving end needs to estimate and measure the channel, and then use the obtained channel response to detect the signal. Since the channel response is determined by the characteristics of the transmitting device, the propagation of the radio frequency carrier in the wireless channel, and the characteristics of the receiving device, the characteristics of the device such as frequency deviation and drift, changes in the wireless propagation channel, Doppler frequency shift an...

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): H04B1/707H04L25/02H04B17/00
Inventor 马国华张金花王波李玮
Owner 湖北众友科技实业股份有限公司