CN214154550U - Novel anti-interference wireless communication system - Google Patents
Novel anti-interference wireless communication system Download PDFInfo
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- CN214154550U CN214154550U CN202120374109.7U CN202120374109U CN214154550U CN 214154550 U CN214154550 U CN 214154550U CN 202120374109 U CN202120374109 U CN 202120374109U CN 214154550 U CN214154550 U CN 214154550U
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Abstract
The utility model provides a novel anti-interference wireless communication system, including the low noise amplifier who connects gradually, predistortion module, broadband filter, once down conversion, intermediate frequency filter, power amplifier, band-pass collection module, low pass filter and anti-interference processing module, wherein, anti-interference processing module still is connected with frequency hopping module, and frequency hopping module and once down conversion are connected power amplifier and still are connected with calibration module, and calibration module is connected with predistortion processing module, and predistortion processing module is connected with predistortion module. The utility model discloses a predistortion technique is to the predistortion processing and the correction through low noise amplifier and power amplifier's signal, has offset the produced signal distortion volume after power amplification, has reduced the communication bit error rate, has improved the reliability of communication; the frequency hopping processing is carried out on the frequency points interfered in the communication process through the frequency hopping technology, so that the anti-interference performance in the communication process is effectively improved.
Description
Technical Field
The utility model relates to the field of communication technology, specifically speaking relates to a novel anti-interference wireless communication system.
Background
In a modern communication system, as the radiation power of various wireless devices (such as radar, satellite communication, mobile communication, navigation, etc.) is increasing, the number of types and numbers of the wireless devices is increasing, and the frequency spectrum is wider, the electromagnetic environment in which the wireless communication devices are located is becoming complex, and the wireless devices are often affected by various interferences in the communication process. Electromagnetic shielding is performed by some physical methods, such as shielding electromagnetic interference by a conductive copper sheet, or absorbing electromagnetic interference by a wave-absorbing material, so that the hardware cost is increased to a certain extent, the spatial layout of the terminal is influenced, and a certain space is occupied.
SUMMERY OF THE UTILITY MODEL
In order to solve the disadvantages of the prior art, the present invention provides a novel anti-interference wireless communication system to overcome the defects of the prior art.
In order to achieve the above object, the present invention provides a novel anti-interference wireless communication system, comprising a low noise amplifier, wherein a signal input terminal is connected to an input terminal of the low noise amplifier, an output terminal of the low noise amplifier is connected to an input terminal of a predistortion module, an output terminal of the predistortion module is connected to an input terminal of a broadband filter, an output terminal of the broadband filter is connected to an input terminal of a first down conversion, an output terminal of the first down conversion is connected to an input terminal of an intermediate frequency filter, an output terminal of the intermediate frequency filter is connected to an input terminal of a power amplifier, an output terminal of the power amplifier is connected to an input terminal of a bandpass acquisition module and an input terminal of a calibration module, an output terminal of the calibration module is connected to an input terminal of a predistortion processing module, an output terminal of the predistortion processing module is connected to the predistortion module, an output terminal of the bandpass acquisition module is connected to an input terminal of a low pass filter, the output end of the low-pass filter is connected with the input end of the anti-interference processing module, the output end of the anti-interference processing module is respectively connected with the signal output end and the input end of the frequency hopping module, and the output end of the frequency hopping module is connected with the input end of the primary down-conversion module.
By the technical scheme, the signals passing through the low-noise amplifier and the power amplifier are subjected to predistortion processing and correction through a predistortion technology, so that the signal distortion generated after power amplification is offset, the communication error rate is reduced, and the communication reliability is improved; the frequency hopping processing is carried out on the frequency points interfered in the communication process through the frequency hopping technology, so that the anti-interference performance in the communication process is effectively improved.
As right the novel anti-interference wireless communication system of the present invention further explained, preferably, the power amplifier is connected to the input end of the band pass acquisition module or to the calibration module through the switch conversion of the transceiver.
Through the technical scheme, when the signal is detected to be more than or equal to-20 dB, the power amplifier quickly switches the receiving channel to the path attenuated by 30dB to realize the connection with the calibration module; when the signal is detected to be less than or equal to minus 30dB, the power amplifier quickly switches the receiving channel to replay a large channel, and the connection with the input end of the band-pass acquisition module is realized.
As to the novel anti-interference wireless communication system of the present invention, preferably, the operating frequency band of the low noise amplifier is 30 MHz-88 MHz, and the operating frequency band of the power amplifier is 108 MHz-174 MHz.
As a further description of the novel anti-jamming wireless communication system of the present invention, preferably, the calibration module includes a calibration signal generator, and the calibration signal generator is configured to provide a predistortion calibration signal; the predistortion processing module comprises an attenuator which is used for carrying out attenuation compensation on a distortion signal of the power amplifier according to the predistortion calibration signal.
As right the novel anti-interference wireless communication system further explain, preferably, the frequency hopping module includes frequency synthesizer, frequency synthesizer is used for synthesizing the frequency hopping carrier, the frequency hopping carrier is random phase place or continuous phase place, and the counter interference processing module detects out the frequency point that receives the interference and carries out frequency hopping modulation.
The utility model has the advantages as follows: the utility model discloses a predistortion technique is to the predistortion processing and the correction through low noise amplifier and power amplifier's signal, has offset the produced signal distortion volume after power amplification, has reduced the communication bit error rate, has improved the reliability of communication; the frequency hopping processing is carried out on the frequency points interfered in the communication process through the frequency hopping technology, so that the anti-interference performance in the communication process is effectively improved.
Drawings
Fig. 1 is the circuit schematic diagram of the novel anti-interference wireless communication system of the present invention.
Detailed Description
In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.
As shown in fig. 1, a novel anti-interference wireless communication system includes a low noise amplifier 1, wherein a signal input end is connected to an input end of the low noise amplifier 1, and the low noise amplifier 1 is configured to perform low noise amplification on a received radio frequency signal; the output end of the low-noise amplifier 1 is connected with the input end of the predistortion module 2, and the predistortion module 2 is used for carrying out predistortion processing on the radio-frequency signal after low-noise amplification; the output end of the predistortion module 2 is connected with the input end of a broadband filter 3, and the broadband filter 3 is used for performing band-pass filtering on the radio-frequency signal after the predistortion processing; the output end of the broadband filter 3 is connected with the input end of a primary down-conversion 4, and the primary down-conversion 4 is used for performing down-conversion processing on the radio-frequency signal subjected to band-pass filtering to obtain an intermediate-frequency signal; the output end of the primary down-conversion 4 is connected with the input end of an intermediate frequency filter 5, and the intermediate frequency filter 5 is used for filtering intermediate frequency signals; the output end of the intermediate frequency filter 5 is connected with the input end of the power amplifier 6, and the power amplifier 6 is used for performing power amplification on the intermediate frequency signal; the output end of the power amplifier 6 is connected with the input end of the band-pass acquisition module 7, and the band-pass acquisition module 7 is used for setting sampling frequency and outputting a band-pass signal with a certain frequency band through A/D sampling; the output end of the band-pass acquisition module 7 is connected with the input end of the low-pass filter 8; the output end of the low-pass filter 8 is connected with the input end of the anti-interference processing module 9, and the output end of the anti-interference processing module 9 is connected with the signal output end.
The output end of the power amplifier 6 is further connected with the input end of the calibration module 11, the output end of the calibration module 11 is connected with the input end of the predistortion processing module 12, the output end of the predistortion processing module 12 is connected with the predistortion module 2, and the calibration module 11 comprises a calibration signal generator for providing a predistortion calibration signal; the predistortion processing module 12 comprises an attenuator for attenuation compensation of the distorted signal of the power amplifier 6 based on the predistortion calibration signal. The signal distortion amount generated after power amplification is offset by the predistortion processing and correction of the signals passing through the low noise amplifier and the power amplifier through the predistortion technology, the communication error rate is reduced, and the communication reliability is improved.
The output end of the anti-interference processing module 9 is further connected with the input end of the frequency hopping module 10, the output end of the frequency hopping module 10 is connected with the input end of the primary down-conversion 4, the frequency hopping module 10 comprises a frequency synthesizer, the frequency synthesizer is used for synthesizing frequency hopping carrier waves, the frequency hopping carrier waves are random phases or continuous phases, and the anti-interference processing module 9 detects out the frequency points which are interfered to carry out frequency hopping modulation. The frequency hopping processing is carried out on the frequency points interfered in the communication process through the frequency hopping technology, so that the anti-interference performance in the communication process is effectively improved.
Preferably, the power amplifier 6 is switched by a transmit-receive switch to connect to the input of the band-pass acquisition module 7 or to connect to the calibration module 11. When the signal is detected to be more than or equal to-20 dB, the power amplifier quickly switches the receiving channel to a path with attenuation of 30dB to realize the connection with the calibration module 11; when the signal is detected to be less than or equal to minus 30dB, the power amplifier quickly switches the receiving channel to replay a large channel to realize the connection with the input end of the band-pass acquisition module 7;
preferably, the operating frequency band of the low noise amplifier 1 is 30MHz to 88MHz, and the operating frequency band of the power amplifier 6 is 108MHz to 174 MHz.
It should be noted that the above mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be interpreted as limiting the scope of the present invention. Various modifications, equivalent substitutions and improvements will occur to those skilled in the art and are intended to be within the spirit and scope of the present invention. The protection scope of the present invention is subject to the appended claims.
Claims (5)
1. A new type of interference resistant radio communication system, characterized in that it comprises a low noise amplifier (1), wherein,
the signal input end is connected with the input end of a low noise amplifier (1), the output end of the low noise amplifier (1) is connected with the input end of a predistortion module (2), the output end of the predistortion module (2) is connected with the input end of a broadband filter (3), the output end of the broadband filter (3) is connected with the input end of a primary down-conversion module (4), the output end of the primary down-conversion module (4) is connected with the input end of an intermediate frequency filter (5), the output end of the intermediate frequency filter (5) is connected with the input end of a power amplifier (6), the output end of the power amplifier (6) is respectively connected with the input end of a band-pass acquisition module (7) and the input end of a calibration module (11), the output end of the calibration module (11) is connected with the input end of a predistortion processing module (12), and the output end of the predistortion processing module (12) is connected with the predistortion module (2), the output end of the band-pass acquisition module (7) is connected with the input end of the low-pass filter (8), the output end of the low-pass filter (8) is connected with the input end of the anti-interference processing module (9), the output end of the anti-interference processing module (9) is connected with the input end of the signal output end and the input end of the frequency hopping module (10) respectively, and the output end of the frequency hopping module (10) is connected with the input end of the primary down-conversion module (4).
2. A new type of interference immune wireless communication system according to claim 1, characterized by the fact that the power amplifier (6) is switched by means of a transceiver switch to be connected to the input of the band-pass acquisition module (7) or to the calibration module (11).
3. The new type of interference-free wireless communication system as claimed in claim 1, wherein the operating frequency band of the low noise amplifier (1) is 30 MHz-88 MHz, and the operating frequency band of the power amplifier (6) is 108 MHz-174 MHz.
4. The new type interference immune wireless communication system of claim 1 wherein the calibration module (11) includes a calibration signal generator for providing a pre-distorted calibration signal; the predistortion processing module (12) comprises an attenuator for attenuation compensation of the distorted signal of the power amplifier (6) according to the predistortion calibration signal.
5. A novel anti-jamming wireless communication system according to claim 1, wherein the frequency hopping module (10) includes a frequency synthesizer, the frequency synthesizer is configured to synthesize a frequency hopping carrier, the frequency hopping carrier is in a random phase or a continuous phase, and the anti-jamming processing module (9) performs frequency hopping modulation on the frequency points detected as being jammed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120374109.7U CN214154550U (en) | 2021-02-09 | 2021-02-09 | Novel anti-interference wireless communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120374109.7U CN214154550U (en) | 2021-02-09 | 2021-02-09 | Novel anti-interference wireless communication system |
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| CN214154550U true CN214154550U (en) | 2021-09-07 |
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| CN202120374109.7U Active CN214154550U (en) | 2021-02-09 | 2021-02-09 | Novel anti-interference wireless communication system |
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