Parallel backscatter communication method and system based on LoRa
By using a single-sound radio frequency source and backscatter tag in the LoRa backscatter communication system, the compatibility and throughput problems are solved and efficient parallel transmission is achieved.
CN120377993APending Publication Date: 2025-07-25SUN YAT SEN UNIV
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Patent Information
- Application Number
- CN202510448615.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2025-07-25
AI Technical Summary
Technical Problem
The existing LoRa backscatter parallel transmission scheme is not compatible with inexpensive commercial LoRa receivers and greatly reduces LoRa throughput.
Method used
Using a single-tone radio frequency source signal as the excitation source, a backscatter tag is designed for backscatter modulation, a standard LoRa data packet is generated, and frequency division multiple access parallel transmission is realized through purely digital DDS frequency synthesis and switching network harmonic cancellation methods.
Benefits of technology
Compatibility with commercial LoRa devices is achieved, and the system throughput and data rate is significantly improved, reducing inter-label interference.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a LoRa-based parallel backscatter communication method and system. The method comprises the following steps: transmitting a single-tone radio frequency source signal as a signal excitation source; designing a backscattering label, and performing backscattering modulation processing on the environmental perception data in combination with the signal excitation source to obtain a modulated standard LoRa data packet; and the receiver presets the center frequency of a communication link, and performs frequency band distinguishing and demodulation processing on the modulated standard LoRa data packet to complete parallel backscatter communication of the LoRa data. According to the invention, while a parallel backscattering LoRa communication system compatible with commercial LoRa equipment is realized, the throughput of the system is improved, and frequency division multiple access parallel transmission is realized. The LoRa-based parallel backscatter communication method and system can be widely applied to the technical field of parallel backscatter communication.
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