Secrecy Performance Enhancement Using Self-Interference Cancellation in Wireless Mutual Broadcast Networks for...

Area of Science:

• Wireless communication security
• Network engineering
• Information theory

Background:

• Wireless Mutual Broadcast (WMB) networks face eavesdropping risks due to their broadcast nature.
• Proximity-based services demand secure data exchange between nearby devices.
• Enhancing security in Random-Access-based WMB (RA-WMB) networks is critical.

Purpose of the Study:

• To investigate improvements in secrecy performance for RA-WMB networks.
• To integrate Physical Layer Security (PLS) with Hybrid Duplex (HBD) operations.
• To optimize operational parameters for maximizing network security.

Main Methods:

• Utilizing a stochastic geometry framework to model RA-WMB networks.
• Implementing HBD operations balancing half-duplex (HD) and full-duplex (FD) modes.
• Employing Self-Interference Cancellation (SIC) to bolster PLS performance.
• Analyzing key parameters: transmission probability (TxPr), jammer density, and FD conditions.

Main Results:

• Demonstrated significant improvements in PLS performance.
• Highlighted the critical role of SIC, especially in dense legitimate node scenarios.
• Showcased the effectiveness of adjusting TxPr to balance HD/FD operations considering SIC imperfections.

Conclusions:

• The proposed design principles offer a robust framework for securing WMB networks.
• Addresses the intricate balance of interference and SIC in diverse network configurations.
• Provides a pathway for enhanced data security in proximity-based services.