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Digital compensation method, device and duplexer

A digital compensation and duplexer technology, applied in the field of digital compensation, can solve problems such as inability to effectively filter out TxL, inability to filter RxI, etc., and achieve the effects of improving power amplifier efficiency, improving performance, and reducing index requirements

Active Publication Date: 2015-01-14
ZTE CORP
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AI Technical Summary

Problems solved by technology

Although the frequency of TxL is different from that of the received signal, they are very close, and the receiving channel often cannot effectively filter out TxL through the filter; since RxI and the received signal have the same frequency, filtering method cannot be used to eliminate RxI

Method used

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  • Digital compensation method, device and duplexer
  • Digital compensation method, device and duplexer
  • Digital compensation method, device and duplexer

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0045] figure 2 It is a schematic diagram of the implementation process of a digital compensation method of the present invention, such as figure 2 As shown, the method includes the following steps:

[0046] Step 201: Determine the digital baseband signal for transmitting the leakage interference signal and the digital baseband signal for receiving the interference signal through the transmitted signal;

[0047] Specifically, the determining the digital baseband signal for transmitting the leakage interference signal and the digital baseband signal for receiving the interference signal through the transmission signal includes:

[0048] Use a directional coupler to collect emission leakage interference signals and receive interference signals in the emission signal;

[0049] Filtering, down-conversion, and analog-to-digital conversion are performed on the ...

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Abstract

The invention discloses a digital compensation method. The method comprises the steps of determining a digital baseband signal for emitting a leakage interference signal and a digital baseband signal for receiving the interference signal through emitting signals, and carrying out digital compensation on received signals according to the digital baseband signal for emitting the leakage interference signal and the digital baseband signal for receiving the interference signal. The invention further discloses a digital compensation device and a duplexer. By means of the technical scheme, power amplification efficiency is improved, the index requirements for the duplexer are lowered, and performance of an FDD system is improved; in addition, the method and device are especially suitable for FDD systems.

Description

Technical field [0001] The present invention relates to digital compensation technology in the communication field, in particular to a digital compensation method, device and duplexer. Background technique [0002] In the frequency division duplex (FDD, Frequency Division Duplexing) system base station, the transmitting channel has a great influence on the receiving channel, and a high-isolation duplexer is often required to eliminate the influence, and this type of duplexer must also meet high power capacity And low insertion loss requirements. To meet the requirements of high power capacity and low insertion loss, the volume and weight of the duplexer need to be increased, which makes the design more difficult. On the premise of maintaining the performance index, reducing the volume and weight of the duplexer has always been a difficult point in engineering, and it is difficult for the traditional duplexer to meet the above requirements at the same time. At present, there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
Inventor 苏涛宗柏青张丽娟孙晨
Owner ZTE CORP
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