Unlock instant, AI-driven research and patent intelligence for your innovation.
A system and method for increasing the excitation distance of the separated backscatter communication for transmitting and receiving
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of backscattering and radio frequency excitation, applied in transmission systems, radio transmission systems, electrical components, etc., can solve the problems of reducing the signal-to-noise ratio of reflected signals, and achieve the goal of increasing excitation distance, improving dynamic range, and reducing system saturation. effect of probability
Active Publication Date: 2021-05-18
CHENGDU UNIV
View PDF8 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a system and method for increasing the excitation distance of the separated backscatter communication for sending and receiving, which solves the problem that the original radio frequency excitation signal transmitted by the exciter in the backscatter communication becomes the interference signal of the receiver and the The limitations of errors such as phase noise, frequency offset, and spatial multipath lead to a decrease in the signal-to-noise ratio of terminal reflected signals, thereby limiting the distance of the backscatter communication system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0073] Such as figure 1 As shown, the receiver includes: a digital processor, a first ADC acquisition module, a second ADC acquisition module, a first RX receiving radio frequency device, a second RX receiving radio frequency device, a TX transmitter and an antenna;
[0074] 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;
[0075] The input end of the first ADC acquisition module is connected to the output end of the first RX receiving radio frequency device;
[0076] The input end of the second ADC acquisition module is connected to the output end of the second RX receiving radio frequency device;
[0077] The output end of the TX transmitter is connected to the input end of the first RX receiving radio frequency device;
[0078] The input terminal of the second RX receiving radio frequency device is connected to the antenna;
[0079] The exciter includes: an am...
Embodiment 2
[0114] Such as Figure 4 As shown, the receiver includes: a digital processor, a first ADC acquisition module, a second ADC acquisition module, a first RX receiving radio frequency device, a second RX receiving radio frequency device, a TX transmitter, a transmitting antenna and a receiving antenna;
[0115] 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;
[0116]The input end of the first ADC acquisition module is connected to the output end of the first RX receiving radio frequency device;
[0117] The input end of the second ADC acquisition module is connected to the output end of the second RX receiving radio frequency device;
[0118] The output end of the TX transmitter is respectively connected with the input end of the first RX receiving radio frequency device and the transmitting antenna;
[0119] The input terminal of the second RX receiving radio freque...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The present invention discloses a system and method for improving the excitation distance of transceiving and separating backscattering communication. In the system and method, the exciter uses the repeater structure to make the excitation signal transmitted by the exciter highly correlated with the carrier signal transmitted by the receiver. Therefore, errors such as phase noise and spectrum are preserved in the excitation signal received by the receiver. The receiver receives the carrier signal transmitted by itself and the excitation signal transmitted by the exciter and its attached terminal feedback signal in two channels, and then the receiver uses the carrier signal transmitted by itself as a reference signal in digital processing, and reduces the signal by iterative equalization. Or eliminate the interference of the phase noise, spectrum, and spatial multipath errors of the excitation signal emitted by the exciter to the terminal feedback signal, thereby improving the excitation distance of the terminal by the transceiver separation backscatter communication system, and the error threshold can be flexibly adjusted according to requirements.
Description
technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a system and a method for increasing the excitation distance of the separated backscatter communication for sending and receiving. 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 to detect reflected signals. The principle is similar, the target terminal does not actively transmit radio frequency signals, but completes the communication process by reflecting radio frequency excitation (or other sources) signals and superimposing its own feedback signals in the reflection. Since the high-power radio frequency module that actively transmits is removed, backscatter communication greatly redu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More