Wireless transmission device based on software radio filtering and method thereof

A software radio and wireless transmission technology, applied in the transmission system, transmission noise suppression, electrical components and other directions, can solve the problem that the wireless communication device does not consider the external interference and noise cancellation process, etc., to achieve the effect of improving the transmission effect

Active Publication Date: 2012-11-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the wireless communication device in this technology does not take into account external interference and noise cancellation process

Method used

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  • Wireless transmission device based on software radio filtering and method thereof
  • Wireless transmission device based on software radio filtering and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Such as figure 1 As shown, the wireless transmission device based on software radio filtering involved in this embodiment includes: a transmitting digital signal processing module 1, a radio frequency transmitter 2, a radio frequency receiver 3 and a receiving digital signal processing module 4, wherein: the transmitting digital signal processing module 1 is connected with the radio frequency transmitter 2 to transmit the intermediate frequency analog signal after signal processing, the radio frequency transmitter 2 and the radio frequency receiver 3 are connected wirelessly to transmit the wireless high frequency and low power analog signal, and the radio frequency receiver 3 and the receiving digital signal processing module 4 The A / D-converted digital signal is transmitted in series, and the receiving digital signal processing module 4 performs digital processing of the signal.

[0038] Described transmission digital signal processing module 1 realizes the digital si...

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Abstract

The invention discloses a wireless transmission device based on software radio filtering and a method thereof, belonging to the technical field of wireless communication. The device comprises a radio frequency transmitter, a radio frequency receiver, a transmission digital signal processing module and a receiving digital signal processing module, wherein the transmission digital signal processingmodule is connected with the radio frequency transmitter to transmit a digital signal; the radio frequency transmitter is wirelessly connected with the radio frequency receiver to transmit a wirelessanalogue signal; and the radio frequency receiver is connected with the receiving digital signal processing module to transmit an analogue signal. By adopting a filtering pre-processing method based on EMD and considering the characteristic of the wireless signal, the invention filters noises spreading all over frequency bands in the signal by means of EMD after the signal is received by a receiving antenna so as to ensure the filtering accuracy and the reliability of the wireless signal transmission with excellent effect. The invention can be applied to the filtering scheme of industry wireless communication and lay the foundation for wide application of the industry wireless communication.

Description

technical field [0001] The present invention relates to a device and method in the technical field of wireless communication, in particular to a wireless transmission device and method based on software radio filtering. Background technique [0002] With the rapid development of wireless communication technology, its application in industry is becoming more and more extensive. However, due to factors such as unstable industrial power grids, high-frequency vibrations at industrial sites, and electric arcs, which will seriously interfere with wireless communication, greatly affecting the reliability of industrial wireless communication, filtering technology in the process of wireless communication is particularly important. [0003] There are generally three ways to realize the digital filter: (1) realize by general-purpose DSP (Digital Signal Processing, digital signal processing) chip programming; (2) choose the existing special filter chip to realize; (3) design by oneself ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B15/00
Inventor 关新平贾静雅梁振虎陈彩莲罗小元
Owner SHANGHAI JIAO TONG UNIV
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