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Updated: Jul 28, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Coordinated-security based on probabilistic shaping and encryption in MMW-RoF system.

Yaoqiang Xiao, Sitao Wang, Zhiyi Wang

|June 1, 2023

Summary

This summary is machine-generated.

A novel physical layer encryption scheme enhances security for W-band millimeter-wave radio-over-fiber (MMW-RoF) systems. This method improves both data security and signal transmission quality, offering a robust solution for secure communication.

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Area of Science:

Optical Communications
Physical Layer Security
Wireless Communications

Background:

Millimeter-wave radio-over-fiber (MMW-RoF) systems offer high bandwidth but face security challenges.
Existing encryption methods may not fully integrate with signal shaping techniques.
Probabilistic shaping (PS) is used in optical communications but requires enhanced security integration.

Purpose of the Study:

To propose a coordinated-security probabilistic shaping (PS) physical layer encryption scheme for MMW-RoF systems.
To enhance the security of MMW-RoF systems against sophisticated attacks.
To improve the bit error rate (BER) performance of encrypted MMW-RoF signals.

Main Methods:

The proposed scheme integrates substituting encryption, coordinated encrypted PS, and unequal length grouping scrambling.
A large key space of 10^103 is generated to prevent brute-force and chosen-plaintext attacks.
The encrypted orthogonal frequency division multiplexing (OFDM) signal was transmitted over 50-km standard single-mode fiber (SSMF) and a 5-m wireless channel.

Main Results:

The encryption scheme effectively coordinates PS and chaotic encryption.
The system demonstrated successful transmission of encrypted OFDM signals over combined fiber and wireless channels.
Achieved a 0.8-dB received optical power gain at a BER of 10^-3 compared to traditional OFDM signals.

Conclusions:

The proposed coordinated-security PS encryption scheme offers superior security performance for MMW-RoF systems.
The scheme demonstrates improved BER performance, validating its practical applicability.
This integrated approach provides a robust solution for secure and efficient MMW-RoF communication.