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Method and system for detecting base station intermodulation signal

A technology of intermodulation signal and detection system, which is applied in the transmission system, wireless communication, transmission monitoring and other directions, can solve the problems of low accuracy rate and the inability to objectively reflect the real intermodulation information of the base station, and achieve the effect of improving the accuracy rate

Inactive Publication Date: 2018-11-20
ROSENBERGER (SHANGHAI) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a base station intermodulation signal detection method to solve the problem in the prior art that the real intermodulation information of the base station cannot be objectively reflected, resulting in low accuracy

Method used

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  • Method and system for detecting base station intermodulation signal
  • Method and system for detecting base station intermodulation signal
  • Method and system for detecting base station intermodulation signal

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Embodiment 2

[0059] Embodiment 2 discloses a base station intermodulation signal detection method, the detection method is applied to the detection system, the detection system includes: a directional coupler, a receiver, and a processor, and the method includes: the uplink After the signal is coupled by the directional coupler, it is transmitted to the receiver, the receiver will collect the power value of each frequency point in the uplink signal, and the processor will receive the downlink frequency point information, and according to the downlink frequency point The information calculates the intermodulation detection frequency point, the processor will send the information of the intermodulation detection frequency point to the receiver, and the receiver will detect the power intensity value on the intermodulation detection frequency point, and the The power intensity value is stored, and the power intensity value is compared with the power intensity value on the intermodulation detect...

Embodiment 3

[0067] Embodiment 3 is a disclosure of a method for determining the intermodulation detection frequency point corresponding to the downlink frequency point in the embodiment. The method is calculated according to the received preset downlink frequency point information of the base station to obtain the The intermodulation frequency point information corresponding to the downlink frequency point signal, this method can effectively delete the overlapping part of the intermodulation signal frequency point information and the uplink working signal frequency point, effectively distinguish the intermodulation signal and the uplink normal working signal, and further improve the detection the accuracy rate.

[0068] For example, suppose the downlink frequency signal f 1 930MHz, f 2 953MHz, f 3 is 954MHz, then the third-order intermodulation frequency points of these three frequency points are:

[0069] 2*f 1 -f 2 =907MHz;

[0070] 2*f 2 -f 1 =956MHz;

[0071] 2*f 1 -f 3 =90...

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Abstract

The invention discloses a base-station intermodulation signal detection method and system. The method is applied to the base-station intermodulation signal detection system. The system comprises a directional coupler, a receiver and a processor. The method includes the steps that upstream signals are coupled through the directional coupler and the coupled upstream signals are sent to the receiver, and upstream-signal power sampling is conducted, intermodulation detection frequency points are acquired through calculation by the processor according to preset downstream frequency point information of a base station, the receiver is controlled by the processor to carry out power value detection on the intermodulation detection frequency points without closing the base station, real-time detection of intermodulation signals is achieved through the directional coupler without analog input numerical values, intermodulation information of the base station can be exactly reflected, and intermodulation interference detection accuracy is improved.

Description

[0001] This application claims the priority of the Chinese patent application filed with China Patent Office on June 18, 2012, with the application number 201210201606.2, and the title of the invention is "A Base Station Signal Detection Method and System", the entire contents of which are incorporated by reference in this application middle. technical field [0002] The invention relates to the field of wireless communication, in particular to a method and system for detecting base station intermodulation signals. Background technique [0003] In wireless communication systems, especially in GSM wireless communication systems, the number of carriers transmitted by the base station can be as high as 8 or even 16. In the case of nonlinear problems, intermodulation interference will occur. The so-called intermodulation interference means that when two or more spectral components act on nonlinear devices, they will modulate each other, thereby generating new frequency component...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W24/08H04B17/327H04B17/318
Inventor 牛晨曦邹新民戴维.索伯萨克
Owner ROSENBERGER (SHANGHAI) TECH CO LTD