Enhanced FSK-modulated Ambient Backscatter Communication System

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
129 Downloads (Pure)


Backscatter communication (Backcom) technology is rapidly developing for deployment in Internet-of-Things (IoT) applications due to its low cost and potential for battery-free operation. In this work, we show that with proper processing at the Backcom receiver the performance of ambient Backcom, with frequency-shift-keying (FSK) based modulation, can be significantly improved compared to the current state of the art. Employing existing ambient radio frequency (RF) signals like TV, FM, Wi-Fi, cellular, etc. as carriers to eliminate dedicated carrier generator, namely ambient Backcom, can massively reduce system costs. However, this compromises to link performance, e.g., data rates and communication range, can be significant and therefore limit its application. Our proposed system is validated using ambient FM signals and 40 kHz bandwidth digital signals in both simulation and experimental environments, achieving zero-error communication with 4m distance between tag and receiver at 200 bps.
Original languageEnglish
Title of host publication2023 IEEE/MTT-S International Microwave Symposium
Number of pages4
ISBN (Electronic)9798350347647
Publication statusPublished - 28 Jul 2023
EventInternational Microwave Symposium 2023 - San Diego Convention Center, San Diego, United States
Duration: 11 Jun 202316 Jun 2023


ConferenceInternational Microwave Symposium 2023
Country/TerritoryUnited States
CitySan Diego
Internet address


  • Ambient carrier
  • FSK
  • backscatter
  • signal processing

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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