TY  - INPR
TI  - Quantized Constant-Envelope Waveform Design for Massive MIMO DFRC Systems
Y1  - 2025/01/20/
AV  - public
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
N2  - Both dual-functional radar-communication (DFRC) and massive multiple-input multiple-output (MIMO) have been recognized as enabling technologies for 6G wireless networks. This paper considers the advanced waveform design for hardware-efficient massive MIMO DFRC systems. Specifically, the transmit waveform is imposed with the quantized constant-envelope (QCE) constraint, which facilitates the employment of low-resolution digital-to-analog converters (DACs) and power-efficient amplifiers. The waveform design problem is formulated as the minimization of the mean square error (MSE) between the designed and desired beampatterns subject to the constructive interference (CI)-based communication quality of service (QoS) constraints and the QCE constraint. To solve the formulated problem, we first utilize the penalty technique to transform the discrete problem into an equivalent continuous penalty model. Then, we propose an inexact augmented Lagrangian method (ALM) algorithm for solving the penalty model. In particular, the ALM subproblem at each iteration is solved by a custom-built block successive upper-bound minimization (BSUM) algorithm, which admits closed-form updates, making the proposed inexact ALM algorithm computationally efficient. Simulation results demonstrate the superiority of the proposed approach over existing state-of-the-art ones. In addition, extensive simulations are conducted to examine the impact of various system parameters on the trade-off between communication and radar performances.
ID  - discovery10204327
UR  - https://doi.org/10.1109/jsac.2025.3531562
PB  - Institute of Electrical and Electronics Engineers (IEEE)
SN  - 0733-8716
JF  - IEEE Journal on Selected Areas in Communications
A1  - Wu, Zheyu
A1  - Liu, Ya-Feng
A1  - Chen, Wei-Kun
A1  - Masouros, Christos
KW  - Augmented Lagrangian method
KW  -  constructive
interference
KW  -  dual-functional radar communication
KW  -  massive
multiple-input multiple-output
KW  -  quantized constant envelope
ER  -