Title :
A First-Order Optimal Zero-Forcing Beamformer Design for Multiuser MIMO Systems via a Regularized Dual Accelerated Gradient Method
Author :
Bin Li ; Hai Huyen Dam ; Cantoni, Antonio ; Kok Lay Teo
Author_Institution :
Dept. of Math. & Stat., Curtin Univ., Perth, WA, Australia
Abstract :
A first-order zero-forcing beamformer design is proposed in this letter for MU-MIMO systems under per-antenna power constraints (PAPC). By forming the regularized dual problem, first-order methods can be applied. To achieve the limit convergence rate of first-order methods, an accelerated method is introduced to solve the regularized dual problem. Simulation results are provided to show the effectiveness of the proposed method.
Keywords :
MIMO communication; array signal processing; gradient methods; MU-MIMO systems; accelerated method; first order methods; first order optimal zero forcing beamformer design; multiuser MIMO systems; perantenna power constraints; regularized dual accelerated gradient method; Acceleration; Australia; Complexity theory; Convergence; Gradient methods; Information rates; Vectors; MIMO systems; Zero-forcing beamforming (ZFBF); accelerated gradient method; first-order method; per-antenna power constraint (PAPC);
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2381245
