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A method and device for suppressing interference signals

A technology for interfering signals and signals, applied in the field of communications, and can solve problems such as inaccurate interference

Active Publication Date: 2018-05-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention provides a method and device for suppressing interference signals to solve the problem of inaccurate interference acquisition

Method used

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  • A method and device for suppressing interference signals
  • A method and device for suppressing interference signals
  • A method and device for suppressing interference signals

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A method for suppressing interference signals provided by an embodiment of the present invention is introduced in detail.

[0069] refer to figure 1 , shows a flowchart of the steps of a method for suppressing interference signals in an embodiment of the present invention.

[0070] Step 100, performing signal reduction on the received signal of the local cell.

[0071] Since the interference of the received signal of this cell will be stronger than the interference of neighboring cells, the received signal of this cell is firstly subjected to a signal reduction operation.

[0072] Specifically, the reduction standard or reduction degree of the received signal of the local cell may be set according to the actual situation, and the embodiment of the present invention does not limit the signal reduction of the received signal of the local cell.

[0073] In step 102, channel estimation is performed on the received signal of the own cell after the signal subtraction by usi...

Embodiment 2

[0078] A method for suppressing interference signals provided by an embodiment of the present invention is introduced in detail.

[0079] refer to figure 2 , shows a flowchart of the steps of a method for suppressing interference signals in an embodiment of the present invention.

[0080] Step 200, performing signal reduction on the received signal of the cell.

[0081] Since the interference of the received signal of this cell will be stronger than the interference of neighboring cells, the received signal of this cell is firstly subjected to a signal reduction operation.

[0082] Specifically, the reduction standard or reduction degree of the received signal of the local cell may be set according to the actual situation, and the embodiment of the present invention does not limit the signal reduction of the received signal of the local cell.

[0083] Step 202: Perform channel estimation on the received signal of the own cell after the signal subtraction by using the refere...

Embodiment 3

[0122] A device for suppressing interference signals provided by an embodiment of the present invention is introduced in detail.

[0123] refer to image 3 , shows a schematic structural diagram of an apparatus for suppressing interference signals in an embodiment of the present invention.

[0124] The apparatus may include: a signal reduction module 300 , a channel estimation module 302 , and an interference suppression module 304 .

[0125] The functions of each module and the relationship between each module are introduced in detail below.

[0126] The signal reduction module 300 is configured to perform signal reduction on the received signal of the cell.

[0127] The channel estimation module 302 is configured to perform channel estimation on the received signal of the own cell after the signal subtraction by using the reference signal of the own cell and the reference signal of the neighboring cell to obtain an accurate interference signal.

[0128] It should be noted...

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PUM

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Abstract

The present invention provides a method and device for suppressing interference signals, wherein the method includes: performing signal reduction on the received signal of the local cell; Afterwards, channel estimation is performed on the received signal of the local cell to obtain a precise interference signal; and the precise interference signal is suppressed. In the present invention, before obtaining the interference signal, the received signal of the local cell is first reduced, and the signal after the reduction of the received signal of the local cell is used, and the interference is estimated by combining the scheduling information of the adjacent cell to obtain an accurate interference signal. It has a better suppression effect in the face of uplink co-channel interference from adjacent cells.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for suppressing interference signals. Background technique [0002] In the actual network planning of the long term evolution (Long Term Evolution, LTE) system, the co-frequency networking mode is mostly adopted, and the problem of co-frequency interference will occur in such a system. [0003] Currently, in an LTE receiver, an uplink Interference Rejection Combining algorithm (Interference Rejection Combining, IRC) is mostly used to suppress interference. The general IRC is as follows: [0004] x=(H H SH+C) -1 h H Sy; [0005] Where x is the equalization result, y is the antenna signal, H is the channel estimation result, and for N R ×N R The interference noise covariance matrix of ; for N T ×N T The covariance matrix of the transmitted signal, N R is the number of receiving antennas, N T is the number of transmitting antennas, [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
CPCH04J11/005H04L25/0204H04L25/0224H04W72/541H04L5/0048H04L5/0073H04L25/0202H04W72/12
Inventor 王希吴刚
Owner DATANG MOBILE COMM EQUIP CO LTD