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Related Experiment Video

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SecrecyPerformance Analysis of Backscatter Communications with Side Information.

Masoud Kaveh1, Farshad Rostami Ghadi2, Riku Jäntti1

  • 1Department of Information and Communication Engineering, Aalto University, 02150 Espoo, Finland.

Sensors (Basel, Switzerland)
|October 28, 2023
PubMed
Summary

Side information enhances backscatter communication (BC) security for Internet of Things (IoT). This study shows non-causal side information at the transmitter improves secrecy capacity and reduces outage probability in BC systems.

Keywords:
average secrecy capacitybackscatter communicationsecrecy outage probabilityside information

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Area of Science:

  • Wireless communication
  • Information security
  • Internet of Things (IoT)

Background:

  • Backscatter communication (BC) enables low-power IoT devices by modulating ambient radio signals.
  • Wireless channel vulnerabilities pose significant security risks to BC systems.
  • Side information (SI) can enhance various aspects of communication systems, including security.

Purpose of the Study:

  • To investigate the impact of non-causal side information (SI) at the transmitter on the secrecy performance of BC systems.
  • To derive analytical expressions for average secrecy capacity (ASC) and secrecy outage probability (SOP) in BC systems with SI.
  • To analyze how SI influences the security and reliability of BC systems.

Main Methods:

  • Derivation of compact analytical expressions for ASC and SOP.
  • Analysis of BC systems with non-causally known SI at the transmitter.
  • Validation of analytical results using Monte Carlo simulations.

Main Results:

  • Analytical expressions for ASC and SOP were derived for BC systems with SI.
  • Monte Carlo simulations confirmed the accuracy of the analytical findings.
  • The presence of SI at the transmitter was shown to constructively impact system performance.

Conclusions:

  • Non-causal SI at the transmitter significantly improves the secrecy performance of BC systems.
  • BC systems utilizing SI achieve higher communication rates with lower SOP and higher ASC compared to systems without SI.
  • The findings highlight the potential of SI for enhancing security and reliability in IoT applications.