A Fine-grained Modulation Technology for ZigBee Backscatter Communication

Zhaoyuan Xu, Yuan Ding, Wei Gong

Research output: Contribution to conferencePaperpeer-review

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Abstract

This paper presents the first symbol-level modulation technology for ZigBee backscatter communication. The developed backscatter tag, leveraging ambient ZigBee transmissions as radio frequency (RF) carrier excitation, conveys data by translating an excitation signal into a new ZigBee signal in neighboring ZigBee channels. This avoids the strong interference from the ambient excitation signals. The key enabling technique is a symbol-level codeword translation, which exploits square waves based on the difference between the excitation and tag data. A working prototype was successfully demonstrated to validate the modulation technology, which consists of two parts: an RF frontend circuit and an FPGA-based control circuit. Through extensive experiments and field studies, the evaluation shows that the bit error rates (BERs) can be controlled to be less than 0.1 when the communication distance is within 2 meters.
Original languageEnglish
Publication statusAccepted/In press - 29 Mar 2022
Event21st Mediterranean Microwave Symposium 2022 - Pizzo Calabro, Italy
Duration: 9 May 202213 May 2022
https://mms-conf.org/

Conference

Conference21st Mediterranean Microwave Symposium 2022
Abbreviated titleMMS2022
Country/TerritoryItaly
CityPizzo Calabro
Period9/05/2213/05/22
Internet address

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