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Near field reflection self-interference signal offset method and device

A signal cancellation and interference signal technology, which is applied to the shaping network, electrical components, transmission system, etc.

Inactive Publication Date: 2014-08-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The method and system for canceling the reflected self-interference signal in the near area provided by the embodiment of the present invention can solve the problem of high complexity in canceling the self-interference component in the near area in the prior art

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  • Near field reflection self-interference signal offset method and device
  • Near field reflection self-interference signal offset method and device
  • Near field reflection self-interference signal offset method and device

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0053] In the first embodiment of the present invention, a me...

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Abstract

Disclosed is a method for canceling a near-zone reflection self-interference signal, including: converting an input radio-frequency interference reference signal into a digital baseband reference signal or digital intermediate-frequency reference signal; converting a radio-frequency output signal after near-zone reflection self-interference cancellation into a baseband or intermediate-frequency signal as an error signal; subjecting the digital baseband reference signal or digital intermediate-frequency reference signal and the error signal to an adaptive filtering operation to form a reconstructed baseband or intermediate-frequency signal of a near-zone reflection self-interference signal component; converting the reconstructed baseband or intermediate-frequency signal of the near-zone reflection self-interference signal component into a near-zone reflection self-interference radio-frequency reconstructed signal; and subtracting the near-zone reflection self-interference radio-frequency reconstructed signal from a pre-acquired radio-frequency signal to form a radio-frequency output signal after near-zone reflection self-interference component cancellation. Also disclosed is a device for canceling a near-zone reflection self-interference signal. The embodiments of the present invention simply and effectively realize cancellation of a near-zone reflection self-interference component.

Description

technical field [0001] The invention relates to the technical fields of computer and communication, in particular to a method and device for canceling a self-interference signal reflected in a near area. Background technique [0002] In mobile cellular communication systems, wireless local area network (Wireless Local Area Network, WLAN), fixed wireless access (Fixed Wireless Access, FWA) and other wireless communication systems, the base station (BaseStation, BS) or access point (Access Point, AP) Communication nodes such as a relay station (Relay Station, RS) and a user equipment (User Equipment, UE) generally have the capability of transmitting their own signals and receiving signals of other communication nodes. Because the attenuation of the wireless signal in the wireless channel is very large, compared with its own transmission signal, the signal from the communication peer reaches the receiving end. The signal is already very weak. For example, the power difference b...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04B1/10
CPCH04L25/03H04B1/10H04B1/109
Inventor 刘晟
Owner HUAWEI TECH CO LTD
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