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Interference suppression method and device in lte system

An interference suppression device and interference suppression technology are applied in multi-frequency code systems, baseband system components, shaping networks in transmitters/receivers, etc., which can solve the problem of low accuracy of interference suppression and achieve the goal of improving accuracy Effect

Active Publication Date: 2017-08-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the actual test process, the LTE system will also be subject to spurious or intermodulation interference from other systems. Using the interference mechanism method in the prior art, the accuracy of interference suppression is not high

Method used

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  • Interference suppression method and device in lte system
  • Interference suppression method and device in lte system
  • Interference suppression method and device in lte system

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Embodiment 2

[0058] The embodiment of the present invention also provides an interference suppression method in the LTE system. In this embodiment, the equipment in the LTE system, for example, the LTE base station can intelligently detect the time domain position where the interference is located, and judge the current interference superposition situation. For example, which one of the above three superposition situations does the current interference belong to? After judging the interference superposition situation, different anti-jamming methods are adopted for different superposition situations.

[0059] Since all symbols in the uplink subframe of the LTE system are transmitted with the same power, the power of different symbols within 1 ms will not vary too much; if the difference is large, it must be superimposed by some kind of interference signal; therefore, you can pass This feature determines the temporal location of the interference. In the process of automatically judging the t...

Embodiment 3

[0071] Such as Figure 7 As shown, an interference suppression device in an LTE system is shown, the device may be a base station in the LTE system, and the device may be used to implement the method in the above method embodiment, therefore, the features in the above method embodiment can be Incorporated into this embodiment. Such as Figure 7 As shown, the device includes:

[0072] A determining unit 72, configured to determine a position interfered with in the subframe;

[0073] a computing unit 74, configured to use the disturbed location to compute an interference matrix;

[0074] The interference suppression unit 76 is configured to perform interference suppression on the subframe according to the interference matrix.

[0075] In a preferred example of the embodiment of the present invention, the determining unit 72 is used to determine the interfered OFDM symbols in the subframe; the calculating unit 74 is used to calculate the interference matrix using the interfer...

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Abstract

The present application provides an interference suppression method and device in an LTE system. The method includes: determining an interfered position in a subframe; using the interfered position to calculate an interference matrix; performing interference suppression on the subframe according to the interference matrix. The present application can improve the accuracy of interference suppression.

Description

technical field [0001] The present application relates to the technical field of testing, and in particular to an interference suppression method and device in a Long Term Evolution (LTE) system. Background technique [0002] In actual network planning, the LTE system mostly adopts the same-frequency networking mode, and the same-frequency interference will occur in the system. In addition, since the LTE system also needs to be adjacent to communication systems of other standards, it is often affected by Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Global System for Mobile Communications (Global System For Mobile Communications (GSM) and other systems, the spurious or intermodulation interference will adversely affect the service quality of LTE, especially the uplink service. [0003] At present, in LTE receivers, the Interference Rejection Combining (IRC) algorithm is mostly used to suppress interference. The IRC equalization algorithm formula is as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L27/26
Inventor 吴刚倪立华
Owner DATANG MOBILE COMM EQUIP CO LTD