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Interference suppression device and method, and receiver

An interference suppression device, a technology of spatial covariance, applied to the shaping network in the transmitter/receiver, preventing/detecting errors through diversity reception, spatial transmit diversity, etc., to achieve the effect of ensuring performance

Inactive Publication Date: 2015-08-19
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, co-channel interference becomes one of the main factors limiting system performance

Method used

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  • Interference suppression device and method, and receiver
  • Interference suppression device and method, and receiver
  • Interference suppression device and method, and receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 is a schematic structural diagram of the interference suppression device according to Embodiment 1 of the present invention. Such as figure 1 As shown, the device 100 includes: an estimation unit 101, a first calculation unit 102, and a filtering unit 103, wherein,

[0026] The estimation unit 101 is configured to estimate the interference and noise spatial covariance matrix of each area of ​​the transmission bandwidth, where the area refers to a time-frequency region including at least one physical resource block in the frequency domain and at least one subframe in the time domain scope;

[0027] The first calculation unit 102 is configured to calculate a metric value according to the estimated interference and noise spatial covariance matrix of each area, where the metric value reflects the level of the interference-to-noise ratio within the transmission bandwidth;

[0028] The filtering unit 103 is configured to perform whitening filtering on received dat...

Embodiment 2

[0109] Image 6 is a schematic diagram of the structure of the receiver in Embodiment 2 of the present invention, such as Image 6 As shown, the receiver 600 includes an interference suppression device 601. The structure and function of the interference suppression device 601 are the same as those described in Embodiment 1, and will not be repeated here.

[0110] Figure 7 It is a schematic block diagram of the system configuration of the receiver 700 according to Embodiment 2 of the present invention. Such as Figure 7 As shown, the receiver 700 may include a central processing unit 701 and a memory 702 ; the memory 702 is coupled to the central processing unit 701 . This diagram is exemplary; other types of structures may also be used in addition to or in place of this structure, for telecommunications or other functions.

[0111] Such as Figure 7 As shown, the electronic device 700 may further include: a communication module 703 , an input unit 704 , a display 705 , a...

Embodiment 3

[0122] Figure 8 is a flow chart of the interference suppression method in Embodiment 3 of the present invention, corresponding to the interference suppression device in Embodiment 1. Such as Figure 8 As shown, the method includes:

[0123] Step 801: Estimate the interference and noise spatial covariance matrix of each area of ​​the transmission bandwidth, where the area refers to a time-frequency range including at least one physical resource block in the frequency domain and at least one subframe in the time domain;

[0124] Step 802: Calculate a metric value according to the estimated interference and noise spatial covariance matrix of each area, where the metric value reflects the level of the interference-to-noise ratio within the transmission bandwidth;

[0125] Step 803: When the metric value is greater than a preset threshold, perform whitening filtering on the received data and / or channel.

[0126] In this embodiment, the method of estimating the interference and ...

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Abstract

The embodiment of the invention provides an interference suppression device and method, and a receiver. The device comprises an estimation unit which is used for estimating an IN-SCM matrix of each region of a transmission bandwidth; a first calculation unit which is used for calculating a measurement value according to the estimated IN-SCM matrixes of all regions, wherein the measurement value reflects the level of interference in the transmission bandwidth and noise ratio of the transmission bandwidth; and a filtering unit which is used for the whitening filtering of received data and / or a signal when the measurement value is greater than a preset threshold value. Through the measurement value which is calculated according to the estimated IN-SCM matrixes and used for reflecting the level of interference in the transmission bandwidth and noise ratio of the transmission bandwidth, the device adaptively carries out the whitening filtering of received data and / or the signal, thereby obtaining a good effect of interference suppression in different interference scenes, and guaranteeing the performance of a system.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to an interference suppression device, method and receiver. Background technique [0002] The growing need to support more user equipment for higher transmission rate communications has led to the widespread use of frequency reuse. Thus, co-channel interference becomes one of the main factors limiting system performance. Existing methods for suppressing co-channel interference include, for example, Interference Rejection Combining (IRC), which requires obtaining information about interfering signals, such as obtaining the Interference and Noise Spatial Covariance Matrix (Interference and Noise Spatial Covariance Matrix, IN-SCM). The IN-SCM matrix can be obtained by estimating the received signal on the resource elements of the reference signal. Due to the time-frequency selective characteristic of interference, the estimation of the IN-SCM matrix is ​​generally b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B7/08H04L1/06H04L25/03
Inventor 李宝金王昕
Owner FUJITSU LTD
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