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Updated: Sep 13, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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A prototype of secure telephone communication.

Lifeng Lin1, Zijian Zhou2, Peihe Jiang3

  • 1Shandong Vocational College of Industry, Zibo, 256414, China.

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|July 28, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a secure telephone system using physical layer security (PLS) via artificial noise (AN) injection. The method effectively prevents wiretapping while ensuring clear communication for legitimate users.

Keywords:
Artificial noise (AN)Physical layer security (PLS)Telephone hybrid

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Area of Science:

  • Telecommunications Engineering
  • Information Security
  • Signal Processing

Background:

  • Traditional wireline telephone systems are vulnerable to eavesdropping.
  • Physical layer security (PLS) offers a promising approach to enhance communication confidentiality.
  • Artificial noise (AN) injection is a technique explored for PLS.

Purpose of the Study:

  • To investigate a secure wireline telephone communication system.
  • To implement and evaluate physical layer security (PLS) using artificial noise (AN) injection.
  • To demonstrate the effectiveness of AN-based security against wiretapping.

Main Methods:

  • Strategically superimposing artificial noise (AN) onto transmitted signals.
  • Implementing coordinated AN cancellation at legitimate receivers.
  • Developing and testing prototype circuits for the AN-based security system.

Main Results:

  • The AN injection method effectively prevents eavesdropping attempts on twisted-pair lines.
  • Legitimate receivers can recover clean signals through coordinated AN cancellation.
  • Experimental results confirm the practical feasibility and effectiveness of the AN-based security approach.

Conclusions:

  • The proposed PLS system using AN injection is a viable solution for securing wireline telephone communications.
  • The approach maintains high communication quality while significantly enhancing security against wiretapping.
  • Prototype implementation validates the practical application of AN-based security in telephone systems.