System and method for reducing error interference of communication and radar excitation signals

A signal error and radar excitation technology, applied in transmission systems, electrical components, etc., can solve the problems of communication and radar excitation signal terminal feedback signal interference, etc., to meet the requirements of reducing accuracy and performance, improving signal-to-noise ratio, and improving excitation. effect of distance

Active Publication Date: 2020-03-27
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above-mentioned deficiencies in the prior art, a system and method for reducing communication and radar excitation signal error interference provided by the present invention solves the problem that the radio frequency excitation of the transmitter causes greater interference to the terminal feedback signal

Method used

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  • System and method for reducing error interference of communication and radar excitation signals
  • System and method for reducing error interference of communication and radar excitation signals
  • System and method for reducing error interference of communication and radar excitation signals

Examples

Experimental program
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Effect test

Embodiment 1

[0075] Such as figure 1 As shown, the receiver includes: a digital processor, a first ADC acquisition module, a second ADC acquisition module, a filter and a receiving antenna;

[0076] The digital processor is respectively connected with the output end of the first ADC acquisition module and the output end of the second ADC acquisition module;

[0077] The input end of the first ADC acquisition module is respectively connected with the output end of the filter and the input end of the second ADC acquisition module;

[0078] The input end of the filter is connected to the receiving antenna;

[0079] The transmitter includes: a frequency source and a frequency converter;

[0080] The output end of the frequency source is connected to the input end of the frequency converter;

[0081] The frequency source is used to respectively transmit radio frequency excitation to the frequency converter, the terminal and the receiving antenna;

[0082] The terminal is used to receive rad...

Embodiment 2

[0087] Such as figure 2 As shown, the receiver includes: a digital processor, a first ADC acquisition module, a second ADC acquisition module and a receiving antenna;

[0088] The digital processor is respectively connected with the output end of the first ADC acquisition module and the output end of the second ADC acquisition module;

[0089] The input terminal of the second ADC acquisition module is connected to the receiving antenna;

[0090] The transmitter includes: a power divider and a frequency source;

[0091] The output end of the frequency source is connected to the input end of the power divider;

[0092] The frequency source is used to respectively transmit radio frequency excitation to the power divider, the terminal and the receiving antenna;

[0093] The terminal is used to receive radio frequency excitation, and the received radio frequency excitation generates a feedback signal at the same time, and sends the feedback signal to the receiving antenna;

[...

Embodiment 3

[0098] Such as image 3 As shown, the receiver includes: a digital processor, a first ADC acquisition module, a second ADC acquisition module, a first filter, a second filter, a first receiving antenna and a second receiving antenna;

[0099] The digital processor is respectively connected with the output end of the first ADC acquisition module and the output end of the second ADC acquisition module;

[0100] The input ends of the first ADC acquisition module are respectively connected to the output ends of the first filter;

[0101] The input end of the first filter is connected to the first receiving antenna;

[0102] The input end of the second ADC acquisition module is connected to the output end of the second filter;

[0103] The input end of the second filter is connected to the second receiving antenna;

[0104] The transmitter includes: a frequency converter and a frequency source;

[0105] The output end of the frequency source is connected to the input end of the...

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Abstract

The invention discloses a system and a method for reducing error interference of communication and radar excitation signals. According to the system, a radio frequency interference cancellation modulecommonly used in a traditional backscatter communication and radar system can be reserved, so that the system is not easily saturated by a radio frequency signal or other radio frequency signals of an excitation terminal while receiving a feedback signal of the terminal. According to the system, a high-precision clock source is not needed, and the cost and power consumption of the emitter and thesystem are reduced; meanwhile, a digital interference elimination subsystem is constructed; dimension parameters of a time delay phase are flexibly adjusted; interference of a Doppler effect and a multipath effect of a wireless communication channel on an input signal is reduced; therefore, the signal-to-noise ratio of the feedback signal of the terminal is improved, the excitation distance fromthe transmitter to the terminal is increased, the requirements on the precision and the performance of the radio frequency interference cancellation module are reduced, the adaptability of the systemis enhanced by being compatible with the radio frequency interference cancellation module, and the system and the method are suitable for backscatter communication and radar detection of transceivingintegration and transceiving separation architecture.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a system and method for reducing error interference of communication and radar excitation signals. Background technique [0002] In order to reduce the complexity, cost and power consumption of IoT communication terminals, and increase the deployment density of terminals, it is usually desirable to use backscatter communication for IoT communication (such as RFID, etc.), and its working principle is similar to that of radar reflection signals , the target terminal does not actively transmit radio frequency signals, but completes the communication process by reflecting radio frequency excitation (from other sources) signals and superimposing its own feedback signals in the reflection (radar is a passive superposition signal). Since the high-power radio frequency module that actively transmits is removed, backscatter communication greatly reduces the cost and power consumption...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04B1/10H04B1/12
CPCH04B1/10H04B1/12
Inventor高俊枫
OwnerCHENGDU UNIV