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Updated: Sep 1, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Hiding Messages in Secure Connection Transmissions with Full-Duplex Overt Receiver.

Lap Luat Nguyen^1,2, Tien-Tung Nguyen³, Anthony Fiche⁴

¹School of Electrical Engineering, International University, Ho Chi Minh City 700000, Vietnam.

Sensors (Basel, Switzerland)

|August 12, 2022

Summary

This summary is machine-generated.

This study explores secure communication by hiding covert messages within overt transmissions using artificial noise. Enhanced artificial noise power and improved receiver performance boost covert communication security and efficiency.

Keywords:

covert communication covert throughput reliable deniable communication

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Area of Science:

Information Security
Wireless Communication
Signal Processing

Background:

Full-duplex receivers can emit artificial noise to secure transmissions.
Covert communication aims to transmit messages undetected by eavesdroppers (wardens).
Exploiting warden uncertainties is key to successful covert transmissions.

Purpose of the Study:

To analyze the performance of covert communication systems employing full-duplex receivers with artificial noise.
To determine the covert throughput and the warden's average detection error probability.
To investigate the impact of system parameters on covert communication performance.

Main Methods:

Modeling a system with a transmitter, a full-duplex receiver emitting artificial noise, and a warden.
Exploiting the warden's uncertainties in decoding overt messages and received artificial noise power.
Deriving mathematical expressions for covert throughput and warden's detection error probability.

Main Results:

Increasing artificial noise transmit power improves covert performance.
Enhanced secure connections at the overt user benefit covert communication.
Improved self-interference cancellation at the full-duplex receiver positively impacts covert performance.
Closer proximity of the warden to the full-duplex receiver enhances covert performance.

Conclusions:

System parameters like artificial noise power and self-interference cancellation directly influence covert communication effectiveness.
Overt transmission security and performance positively correlate with covert communication success.
The warden's location relative to the receiver is a critical factor in covert transmission security.