Interference Exploitation 1-Bit Massive MIMO Precoding: A Partial Branch-and-Bound Solution With Near-Optimal Performance

• Published in: IEEE transactions on wireless communications Vol. 19; no. 5; pp. 3474 - 3489
• Main Authors: Li, Ang, Liu, Fan, Masouros, Christos, Li, Yonghui, Vucetic, Branka
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 1-bit precoding; branch-and-bound; Complexity; Complexity theory; constructive interference; Interference; Lagrangian; Massive MIMO; MIMO (control systems); MIMO communication; Optimization; Performance enhancement; Phase shift keying; Precoding; Quadrature amplitude modulation; Signal to noise ratio

In this paper, we focus on 1-bit precoding approaches for downlink massive multiple-input multiple-output (MIMO) systems, where we exploit the concept of constructive interference (CI). For both PSK and QAM signaling, we firstly formulate the optimization problem that maximizes the CI effect subject...