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

Method for detecting standing-wave ratio

A standing wave ratio detection and standing wave ratio technology, applied in the field of signal transmission, can solve the problems of high algorithm complexity, loss of calculation accuracy, loss of accuracy, etc., and achieve the effects of improving detection accuracy, reducing the number of operations, and reducing detection complexity.

Active Publication Date: 2012-09-19
TD TECH COMM TECH LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen from the above steps that two inverse Fourier operations need to be performed in the FDR method. Since the sequence of operations involved in each inverse Fourier operation is long, the algorithm complexity is high; in addition, because the inverse Fourier operation inevitably It will cause loss of calculation accuracy, therefore, the result after multiple inverse Fourier operations will have a greater loss in accuracy

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 for detecting standing-wave ratio
  • Method for detecting standing-wave ratio
  • Method for detecting standing-wave ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The core idea of ​​the present invention is: considering the influence of the inverse Fourier operation on the complexity and precision of the algorithm, the present invention will increase the calculation complexity and precision of the standing wave ratio by reducing the number of inverse Fourier operations.

[0024] figure 2 It is a schematic flow chart of Embodiment 1 of the present invention, such as figure 2 As shown, this embodiment mainly includes:

[0025] Step 201: Send the preset training sequence on two adjacent idle subframes respectively, and collect the feedback sequence C of the training sequence on the two adjacent idle subframes respectively back and reflection sequence C re .

[0026] This step can specific...

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 provides a method for detecting a standing-wave ratio, which comprises the following steps of: respectively sending a preset training sequence on two adjacent idle sub-frames; respectively collecting a feedback sequence Cback and a reflection sequence Cri of the training sequence on the two adjacent idle sub-frames; accordingly, calculating the reflected and fed back shock response Z, wherein Gcir is a gain value of a circulator; and confirming the standing-wave ratio corresponding to each peak in the shock response Z, according to the shock response Z. According to the method provided by the invention, the detection complexity is effectively reduced and the detection precision is increased.

Description

technical field [0001] The signal transmission technology in the radio frequency transmission system of the present invention particularly relates to a detection method of standing wave ratio. Background technique [0002] In the radio frequency transmission system, if the impedance of the antenna and the feeder does not match or the impedance of the antenna and the transmitter does not match, the high-frequency energy will be reflected and returned, and will merge with the forward part of the interference to generate a standing wave. In order to characterize and measure the standing wave characteristics in the antenna feed system, that is, the situation of forward wave and reflected wave in the antenna, the concept of "standing wave ratio" is established. The calculation formula of the standing wave ratio is: SWR=R / r=(1+K) / (1-K), where K is the reflection coefficient, R and r are the output impedance and input impedance respectively. When the two impedance values ​​are the...

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): H04L25/02H04L27/26
Inventor 胡伟宣洪艺伟
Owner TD TECH COMM TECH LTD