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Interference suppression method and device

A technology of interference suppression device and interference signal, which is applied to the parts of the amplification device, the shaping network in the transmitter/receiver, and electrical components, etc., which can solve the problems that the anti-interference effect cannot be obtained, and achieve the reduction of computing resources and storage. The waste of resources, the effect of reducing complexity and reducing performance requirements

Active Publication Date: 2014-06-25
HUAWEI TECH CO LTD
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Problems solved by technology

However, in practical applications, in order to achieve the effect that the expansion characteristics of the pre-distortion module just offset the compression characteristics of the power amplifier, it is necessary to use real-time adaptive algorithms and complex mathematical modeling in the pre-distortion module
If the expansion characteristics of the pre-distortion module cannot completely offset the compression characteristics of the power amplifier, the input signal will still be distorted, resulting in nonlinear products, and the ideal anti-interference effect cannot be achieved

Method used

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  • Interference suppression method and device

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Embodiment Construction

[0032] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0033] refer to image 3 , image 3It is a structural schematic diagram of an embodiment of the interference suppression device of the present application. The interference suppression device in this embodiment includes: a pre-distortion module 110 and multiple (here "multiple" refers to two or more) data paths, the pre-distortion module 110 is used to input digital baseband sign...

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Abstract

The application discloses an interference suppression method and device. The method includes predistorting digital baseband signals to obtain predistortion signals complementary with the nonlinear features of a power amplifier, amplifying the predistortion signals to obtain transmitting signals including business data signals and interference signals and transmitting the transmitting signals to an antenna for emission, obtaining the interference signals based on the digital baseband signals and the transmitting signals and adjusting the amplitude-phase coefficient to enable multiple data paths to deviate from the direction of the radiation lobe of the business data signals based on the orientation of the radiation lobe of interference signals transmitted from the antenna.

Description

technical field [0001] The present application relates to the communication field, and in particular to an interference suppression method and device. Background technique [0002] Interference signal is an important reason that affects the communication effect in communication. Generally, interference signals include co-channel interference and adjacent-frequency interference. Among them, co-frequency interference means that the carrier frequency of the interference signal is the same as that of the service data signal, and causes interference to the same-frequency service data signal; and adjacent-frequency interference refers to two The interference between adjacent channels is also called adjacent frequency interference, such as figure 1 shown. The main source of adjacent channel interference is the non-linear products produced by the power amplifier in the transmit channel. When the power amplifier works in the nonlinear region, it will generate in-band and out-of-ba...

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Application Information

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IPC IPC(8): H04L25/03H04L25/49
CPCH04B1/04H03F1/3241H04B2001/0425
Inventor 成卫东
Owner HUAWEI TECH CO LTD
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