New look at secure performance of massive MIMO with low-resolution DACs
Anh-Tu Le,
Dinh-Thuan Do,
Nhu-Ngoc Dao,
Nhan Duc Nguyen,
Adão Silva
Affiliations
Anh-Tu Le
Faculty of Electronics Technology, Industrial University of Ho Chi Minh City (IUH), Ho Chi Minh City, Viet Nam
Dinh-Thuan Do
Department of Computer Science and Information Engineering, College of Information and Electrical Engineering, Asia University, Taichung 41354, Taiwan
Nhu-Ngoc Dao
Department of Computer Science and Engineering, Sejong University, Seoul 05006, Republic of Korea
Nhan Duc Nguyen
Faculty of Mechanical-Electrical and Computer Engineering, School of Engineering and Technology, Van Lang University, 69/68 Dang Thuy Tram Street, Ward 13, Binh Thanh Dis-trict, Ho Chi Minh City, 70000, Viet Nam; Corresponding author.
Adão Silva
Instituto de Telecomunicações (IT), Departamento de Eletrónica, Telecomunicações e Informática (DETI), University of Aveiro, 3810-193, Aveiro, Portugal
Since the requirement of secure transmission for massive multiple-input–multiple-output (mIMO) is high, we consider a secure massive MIMO system in presence of multiple digital to analog converters (DACs). We deal with complicated performance analysis of the proposed system including a base station, a legitimate user, and an eavesdropper while these nodes are equipped with multiple antennas. In particular, we intend to present the closed-form expression for the ergodic secrecy rate of the system and also calculate the optimal power allocation for better performance gain. The simulation analysis shows that quantization bits, transmit signal to noise ratio at the base station, and power allocation plays a major role in enhancing the performance of the system.
