Satellite signal transmitting device based on different bandwidth configurations

A technology of satellite signal and transmitting device, applied in the field of satellite communication, to achieve the effect of simplifying implementation complexity, suitable for mass production, and maintaining core competitiveness

Inactive Publication Date: 2017-08-04
WUXI DSP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally speaking, there are two technical approaches: one is to fix the bandwidth configuration through standardization, thereby limiting the bandwidth configuration combination of satellite communication equipment; the second is to re-plan a satellite signal transmitter device that can meet the dynamic configuration requirements of different bandwidths

Method used

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  • Satellite signal transmitting device based on different bandwidth configurations

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0024] The problem to be solved by the present invention is that under the prospect of fixing the radio frequency signal carrier frequency and the sampling and shaping frequency of the digital baseband, the channel bandwidth of the satellite communication equipment can be temporarily configured according to the actual needs of customers and system operation, and the channel waveform can be dynamically generated.

[0025] Such as figure 1 As shown, a satellite signal transmitting device based on different bandwidth configurations includes a serial-to-parallel conversion module, a discrete Fourier transform module, a subcarrier mapping module, a subcarrier signal weighting module, an inverse fast Fourier transform module and a digital- Analog conversion module;

[0026] Wherein, the serial-to-parallel conversion module is used to serially store the ...

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Abstract

The invention discloses a satellite signal transmitting device based on different bandwidth configurations. The satellite signal transmitting device comprises a serial-to-parallel conversion module, a discrete Fourier transformation module, a sub-carrier mapping module, a sub-carrier signal weighting module, a reverse fast Fourier transformation module and a digital-to-analog conversion module. According to the satellite signal transmitting device disclosed by the invention, under the premise of fixing the carrier frequency of radio frequency signals and the sampling and shaping frequency of digital basebands, the channel bandwidth of satellite communication equipment can be temporarily configured according to the actual needs of customers and system operations, and the channel waveform can be dynamically generated.

Description

technical field [0001] The invention belongs to the field of satellite communication, in particular to a satellite signal transmitting device based on different bandwidth configurations. Background technique [0002] In the existing satellite communication technology, the waveform of the transmitter is mostly spread spectrum communication and single carrier communication. The reason is that spread spectrum communication and single carrier communication can spread farther under the same transmitter power, thus Reduce the sensitivity index of the satellite signal receiver, expand the service area of ​​the satellite signal, and improve the communication service level of the satellite. However, the characteristic of single-carrier communication is that the change of its bandwidth must be changed by changing the shaping of the signal and the sampling frequency, or by changing the carrier frequency of the radio frequency. It is necessary to make corresponding adjustments and corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04H04B7/185
CPCH04B1/04H04B7/18513
Inventor 张小东
Owner WUXI DSP TECH
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