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Method and device for removing interference in VSWR detection of radio frequency equipment

A technology of standing wave ratio detection and radio frequency equipment, applied in the field of wireless communication, can solve the problems of abnormal signal leakage, difference of channel hardware isolation characteristics, different accuracy indicators of detection results, etc. The effect of detection accuracy

Inactive Publication Date: 2016-08-31
NANJING ZHONGXING SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current performance requirements for standing wave ratio, that is, how to further improve the accuracy of standing wave ratio detection, can be improved to a certain extent by using the vector standing wave ratio detection algorithm, but for different radio frequency units, there are interference phenomena such as channel hardware There are differences in the isolation characteristics themselves, and for example, abnormal signal leakage, which will still have a certain degree of impact on the detection accuracy of the standing wave ratio, so that the same detection method is used on different hardware devices, and the accuracy index of the detection results obtained Different, completely subject to the quality of hardware equipment

Method used

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  • Method and device for removing interference in VSWR detection of radio frequency equipment
  • Method and device for removing interference in VSWR detection of radio frequency equipment
  • Method and device for removing interference in VSWR detection of radio frequency equipment

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Embodiment 1

[0036] This embodiment outlines the method for removing interference signals in the standing wave ratio detection, as figure 1 shown, including the following steps 110-130:

[0037] Step 110, perform the following operations on each channel to obtain the original IQ data of each channel: send the first continuous wave on only one channel in the same time slot, and perform forward power detection and reverse power detection on this channel to obtain the channel The original forward IQ data and the original reverse IQ data;

[0038] The above channel refers to the hardware transmission physical channel in the radio frequency device.

[0039] The same first continuous wave is sent on each channel, where I data may or may not be equal to Q data.

[0040] Step 120, send the second continuous wave only on the first preset channel in the first preset time slot, perform forward power detection and reverse power detection on the second preset channel, and obtain interference forward ...

Embodiment 2

[0050] In this embodiment, the interference removal in the open-circuit calibration in the standing wave calibration is taken as an example for illustration. In the embodiment, the physical channel multiplexed as the detection channel is selected as the first preset channel.

[0051] The main board channel includes: channel 0, channel 1, channel 2 and channel 3, and the slave board channel includes: channel 4, channel 5, channel 6 and channel 7, wherein the main board channel 2 and the slave board channel 6 are physical channels multiplexed as detection channels aisle.

[0052] De-interference processing includes the following steps:

[0053] Step 210, channels 0, 1, 2, 3, 4, 5, 6, and 7 respectively transmit continuous waves in a certain fixed time slot, and perform forward power detection and reverse power detection, and the remaining channels are closed during detection. Obtain the original front reverse open circuit IQ data;

[0054] For the process of performing forward...

Embodiment 3

[0073] This embodiment takes standing wave detection and interference removal as an example for illustration. In the embodiment, a physical channel that is multiplexed as a detection channel is selected as the first preset channel.

[0074] Standing wave detection is the calculation process of the standing wave ratio results obtained by using various normalized IQ data obtained by standing wave calibration. The open circuit normalized IQ and short circuit normalized IQ after dejamming are obtained based on standing wave calibration. Normalized IQ and matching normalized IQ data, combined with the following standing wave detection to obtain the original IQ of real-time forward and reverse detection after de-interference, and corresponding normalization processing to obtain the measured normalization after de-interference IQ data. Finally, the standing wave ratio of each channel can be calculated.

[0075] The de-interference processing steps in the standing wave detection are ...

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Abstract

The invention discloses a method and apparatus for interference elimination in standing-wave ratio detection of radio frequency equipment, thereby improving the precision of standing-wave ratio detection. The method comprises the following steps: obtaining original IQ data of all channels by executing the following operations on all the channels: only emitting a first continuous wave at one channel at a same time slot and carrying out forward power detection and reverse power detection on the channel so as to obtain original forward IQ data and original backward IQ data of the channel; emitting a second continuous wave only at a first preset channel at a first preset time slot and carrying out forward power detection and reverse power detection on a second preset channel so as to obtain interference forward IQ data and interference reverse IQ data; and subtracting the interference forward and reverse IQ data from the original forward and reverse IQ data of all the channels so as to obtain forward and reverse IQ data after interference elimination of all the channels. In addition, the apparatus includes an original data measuring module, an interference data measuring module and an interference elimination module. The standing-wave ratio detection precision of a remote radio unit (RRU) is effectively improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for removing interference signals in standing wave ratio detection of radio frequency equipment. Background technique [0002] In a wireless communication system, whether the performance of the radio frequency channel of the radio frequency unit is good or not and whether the connection of the antenna feeder of each channel is normal will directly affect the performance indicators such as the amplitude and phase of the radio frequency signal output, thus causing a certain degree of sensory disturbance to the user's sense of communication. influences. The purpose of VSWR detection is to determine whether the antenna is connected properly by detecting the VSWR. However, the current performance requirements for standing wave ratio, that is, how to further improve the accuracy of standing wave ratio detection, can be improved to a certain extent by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/309H04B17/345
Inventor 王翔
Owner NANJING ZHONGXING SOFTWARE