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Base-band device based on software radio

A technology of software radio and baseband equipment, which is applied in the direction of instruments, computer control, simulators, etc., and can solve problems affecting circuit performance, etc.

Inactive Publication Date: 2016-01-27
广州北航新兴产业技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, for analog circuits, the lifetime of the device and the materials used to manufacture the device must be considered, which will greatly affect the performance of the entire circuit, and these problems cannot be overcome

Method used

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  • Base-band device based on software radio
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Embodiment Construction

[0069] The specific implementation manners of the present invention will be briefly described below in conjunction with the accompanying drawings.

[0070] As shown in the figure, a baseband device based on software radio is characterized in that it includes two 70M uplink transmission channels, two 70M downlink reception channels, two PSK reception channels, two PSK transmission channels, and LVTTL level input for testing And output interface, clock management unit, data processing module, PCI interface module, CPLD logic module, extended RAM module, digital up-conversion / down-conversion module, FLASH module and power supply module; baseband equipment is connected with CPCI computer through PCI interface chip PLX9054, The PCI bus protocol is converted into a local bus protocol, the local bus signal output by the PCI interface chip is decoded through the CPLD, and the PCI bus completes the access to the FPGA and DSPHPI interfaces through the CPLD, and completes the download of ...

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Abstract

The purpose of the invention is to provide a base-band device based on software radio. The technical scheme of the invention includes two paths of 70M uplink sending channels, two paths of 70M downlink reception channels, two paths of PSK reception channels, two paths of PSK sending channels, LVTTL level input and output interfaces for test, a clock management unit, a data processing module, a PCI interface module, a CPLD logic module, an expanding RAM module, digital up conversion / down conversion modules, a FLASH module and a power supply module. The base-band device is connected to a CPCI computer through an PCI interface chip. A PCI bus protocol is converted to a local bus protocol. Address decoding is carried out on local bus signals output by the PCI interface chip through CPLD. A PCI bus finishes accessing the interface through the CPLD, and finishes downloading programs, so that the computer can update firmware programs through the PCI interface. The multifunctional communication of multi-band frequency, multi-mode, multi-channel, multi-speed, and multi-protocol is realized, and thus a good and flexible software radio system platform is constructed.

Description

technical field [0001] The invention relates to the fields of satellite radio measurement and control and aerospace radio measurement and control, in particular to a baseband device based on software radio. Background technique [0002] At present, due to the constraints of the device level, it is still difficult to directly sample and process the radio frequency signal. Especially in space radio signal measurement and control and satellite signal measurement and control, there are defects of unstable factors. Therefore, the current software radio system generally adopts the intermediate frequency digital technology on the premise of retaining the common, flexible and open software radio. Use a local oscillator signal to mix with the digitized input signal (also can go through several times of mixing), change it into a unified intermediate frequency signal, and then digitize it. Therefore, at present, IF digital technology is one of the core technologies of software radio. ...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/042
Inventor 尹佳赵圆方勇姜瀚张杰斌图们赵洪博
Owner 广州北航新兴产业技术研究院
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