Multi-channel demodulation signal processing platform based on CPCI (compact programmable communication interface)

A technology for demodulating signals and processing platforms, applied in the field of signal processing, which can solve the problems that satellite signal processing platforms have no bandwidth signal extraction and filtering, cannot realize multi-channel signal processing, and cannot realize simultaneous compatibility of multiple technologies, etc., to achieve strong practicability Effect

Inactive Publication Date: 2012-09-26
CHENGDU LINHAI ELECTRONICS
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Problems solved by technology

[0004] In view of the characteristics of the above-mentioned satellite signals, the existing satellite signal processing platform is designed according to the specific requirements of the satellite communication system, using one of the applicable multiple access technologies, and c

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  • Multi-channel demodulation signal processing platform based on CPCI (compact programmable communication interface)
  • Multi-channel demodulation signal processing platform based on CPCI (compact programmable communication interface)
  • Multi-channel demodulation signal processing platform based on CPCI (compact programmable communication interface)

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0028] refer to figure 1 , Different satellites send out different (path) intermediate frequency signals, and different intermediate frequency signal receiving antennas transmit different (path) intermediate frequency signals to the earth station through the downlink; the earth station transmits the received weak intermediate frequency signals of different (path) to Different low-noise amplifier modules to ensure the quality of the received signal; the amplified different (path) intermediate frequency signals are then frequency-converted through the down-converter corresponding to t...

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Abstract

The invention discloses a multi-channel demodulation signal processing platform based on a CPCI (compact programmable communication interface). The demodulation signal processing platform comprises a multi-channel intermediate-frequency signal receiving module; the multi-channel intermediate-frequency signal receiving module can be connected with at least one A/D (analog/digital) conversion module and at least one DDC (direct digital control) digital down converter module; the DDC digital down converter module is connected with an FPGA (field programmable gate array) module; and the FPGA module is connected with a DSP (digital signal processor) module and a CPCI module. By using the multi-channel demodulation signal processing platform based on the CPCI, which is provided by the invention, the analog signal reception and the digital signal sending are integrated into a whole; the parallel and independent A/D conversion module and a DDC digital down converter passage are adopted; at least one intermediate-frequency signal of satellite mobile communication can be received; the multi-channel demodulation signal processing is realized; and the signal processing platform is compatible with signal processing techniques with different modes, different systems and different speed rates, and has stronger practicability.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a multi-channel demodulation signal processing platform based on a CPCI interface. Background technique [0002] Satellite mobile communication is the communication between radio communication stations on the earth (including the ground and the lower atmosphere) using satellites as relays. The most suitable frequency for satellite communication is the 1-10GHz frequency band, that is, the microwave frequency band. In order to meet more and more demands, research and application of new frequency bands have begun, such as 12GHz, 14GHz, 20GHz and 30GHz. In the microwave frequency band, the working frequency bandwidth of the entire communication satellite is about 500MHz. In order to facilitate amplification, transmission and reduce modulation interference, several transponders are generally installed on the satellite, and the working frequency bandwidth of each transponder is 36MHz ...

Claims

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Application Information

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IPC IPC(8): H04B1/00H04B1/26
Inventor 吴伟林王维军何戎辽陈春梅张龙
Owner CHENGDU LINHAI ELECTRONICS
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