Mobile communication repeater system applying digital intermediate frequency mode

A digital intermediate frequency signal, mobile communication technology, applied in radio relay systems, transmission systems, electromagnetic wave transmission systems, etc., can solve the problem of affecting system performance, difficult to fully achieve the balance of I/Q amplitude and phase, difficult to adapt to needs, etc. question

Inactive Publication Date: 2006-07-12
COMBA TELECOM TECH (GUANGZHOU) CO LTD
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AI Technical Summary

Problems solved by technology

[0002] The mobile communication repeater plays a very important role in the network optimization and signal coverage of the mobile communication system. The digital repeater technology has also attracted more and more attention. However, if the frequency conversion is still performed in the analog part, the system uses a large number of analog It is difficult for the device to fully achieve the balance of I/Q amplitude and phase, thus affecting the performance of the system
In addition, in the current communication market, on the one hand, multiple second-generation

Method used

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  • Mobile communication repeater system applying digital intermediate frequency mode
  • Mobile communication repeater system applying digital intermediate frequency mode
  • Mobile communication repeater system applying digital intermediate frequency mode

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Embodiment Construction

[0017] The preferred embodiments corresponding to the present invention will be specifically described below in conjunction with the accompanying drawings:

[0018] 1, figure 1 Shown is the system configuration diagram of the mobile communication repeater adopting the digital intermediate frequency mode provided by the present invention. As shown in the figure, the downlink signal of the base station is converted into an analog intermediate frequency signal by the RF module and then sent to the ADC / DAC group, converted into a digital intermediate frequency signal by A / D, extracted by the digital down converter, filtered and transformed into The baseband signal is then sent to the baseband processing unit and packaged into serial data in a certain frame format, and then transmitted to the high-speed digital fiber optic transceiver at the coverage end through the high-speed digital optical fiber transceiver. / DAC group, the digital up-converter is used for filtering and interpo...

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Abstract

The invention discloses a mobile communication direct amplifying station with digital intermediate frequency. Wherein, transforming the down signal into analog intermediate frequency signal with RF module to send to ADC/DAC group and transform into digital intermediate frequency signal by A/D; extracting and filtering with digital down converter, and secondary transforming into baseband signal to send to baseband treatment unit for packaging into serial data as given frame format; transferring with optical fiber to high-speed digital optical fiber transceiver on cover end to de-frame with baseband treatment unit and send into ADC/DAC group; filtering and interpolating with digital up converter, transforming into analog intermediate frequency signal by D/A converter; finally, taking frequency conversion with RF module into RF signal and sending to opposite over area. The remote machine sends received up signal of mobile terminal with said inverse process to receiving end of base station. This invention avoids intrinsic leakage and dc offset in prior art.

Description

Technical field [0001] The invention relates to a mobile communication repeater series adopting a new signal processing mode, in particular to a mobile communication digital optical fiber repeater system adopting a digital intermediate frequency mode. Background technique [0002] The mobile communication repeater plays a very important role in the network optimization and signal coverage of the mobile communication system. The digital repeater technology has also attracted more and more attention. However, if the frequency conversion is still performed in the analog part, the system uses a large number of analog It is difficult for the device to fully achieve the balance of I / Q amplitude and phase, thus affecting the performance of the system. In addition, in the current communication market, on the one hand, multiple second-generation mobile communication systems coexist and still play an important role; on the other hand, new standards are constantly being formulated, but...

Claims

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Application Information

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IPC IPC(8): H04B10/16H04B7/14H04B10/29
Inventor 张远见张跃军陈遂阳
Owner COMBA TELECOM TECH (GUANGZHOU) CO LTD
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