• Student: Tran Hieu Nghia
• Advisor: Ngo Thanh Hai, MSc
• University: University of Science - VNU-HCM
• Year: 2023

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For Vietnamese version:

ĐẠT ĐƯỢC GIAO TIẾP GIẤU TRONG HỆ THỐNG NOMA ĐƯỜNG LÊN BẰNG KỸ THUẬT NGHỊCH ĐẢO KÊNH TRUYỀN (vn-VN)

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Project Summary

This thesis investigates covert communication in uplink NOMA systems. The Truncated Channel Inversion Power Control (TCIPC) technique is employed for public users to create a "shield" and make it challenging for the warden to detect the covert signal. The thesis analyzes the warden's detection performance (DEP) and users' connection outage probabilities (COPs), and optimizes the power control parameter to achieve the best effective transmission rate (ECT) under covertness and QoS constraints. Matlab simulations validate the theoretical analysis and evaluate the impact of system parameters.

Key Technologies & Methods

• Field: Wireless Communications, NOMA (Non-Orthogonal Multiple Access), Covert Communication.
• Techniques: Truncated Channel Inversion Power Control (TCIPC), Successive Interference Cancellation (SIC), Detection Theory.
• Simulation: Matlab.
• Analysis: Probability analysis (DEP, COPs), constrained optimization.

Highlights / Key Results

• Determined the optimal detection threshold at the warden and derived the minimum detection error probability.