Nguyen Van Vinh

Feb 25, 2024 | onlinelibrary.wiley.com | Nguyen Van Vinh

It has been confirmed that the aerial intelligent reflecting surface (AIRS) can dramatically improve the coverage and quality of service of wireless communication systems. This paper proposes to exploit an AIRS to enhance the physical layer security (PLS) of wireless communication systems. In particular, the AIRS flies at convenient positions for enhancing legitimate channel gain and reducing eavesdropping channel gain.

Aug 30, 2023 | onlinelibrary.wiley.com | Nguyen Van Vinh

In practice, hardware impairments (HIs) often exist in wireless devices, especially in low-cost device systems. However, previous reports usually ignored HIs due to the computational complexity in mathematical derivations, particularly in millimeter-wave (mmWave) communications. This article proposes the usage of transmit antenna selection (TAS) and multiple reconfigurable intelligent surfaces (RISs) to address HIs in mmWave communications.

Apr 3, 2023 | onlinelibrary.wiley.com | Tran Hoang |Nguyen Van Vinh |Dinh Thi Tam |Ba Cao Nguyen

In this article, we exploit the huge advantages of full-duplex (FD) transmission, nonorthogonal multiple access (NOMA) technique, unmanned aerial vehicle (UAV), and millimeter-wave (mmWave) communications in an Internet of things (IoT) sensor network. Specifically, the UAV operates as a FD amplify-and-forward (AF) relay to aid communications between an IoT sensor and multiple NOMA users. Moreover, the FD-UAV (FDU) adopts both fixed and variable gains.