1. On Estimating Maximum Sum Rate of MIMO Systems with Successive Zero-Forcing Dirty Paper Coding and Per-antenna Power Constraint
- Author
-
Le-Nam Tran, Thuy M. Pham, and Ronan Farrell
- Subjects
FOS: Computer and information sciences ,Computer Science - Machine Learning ,Mathematical optimization ,Computer science ,Computer Science - Information Theory ,Information Theory (cs.IT) ,MIMO ,020302 automobile design & engineering ,020206 networking & telecommunications ,Machine Learning (stat.ML) ,02 engineering and technology ,Precoding ,Machine Learning (cs.LG) ,0203 mechanical engineering ,Statistics - Machine Learning ,0202 electrical engineering, electronic engineering, information engineering ,Zero Forcing Equalizer ,Dirty paper coding ,Communication channel ,Mimo systems ,Computer Science::Information Theory - Abstract
In this paper, we study the sum rate maximization for successive zero-forcing dirty-paper coding (SZFDPC) with per-antenna power constraint (PAPC). Although SZFDPC is a low-complexity alternative to the optimal dirty paper coding (DPC), efficient algorithms to compute its sum rate are still open problems especially under practical PAPC. The existing solution to the considered problem is computationally inefficient due to employing high-complexity interior-point method. In this study, we propose two new low-complexity approaches to this important problem. More specifically, the first algorithm achieves the optimal solution by transforming the original problem in the broadcast channel into an equivalent problem in the multiple access channel, then the resulting problem is solved by alternating optimization together with successive convex approximation. We also derive a suboptimal solution based on machine learning to which simple linear regressions are applicable. The approaches are analyzed and validated extensively to demonstrate their superiors over the existing approach., Comment: 5 pages, 4 figures
- Published
- 2019