Table 1 Comparison table of the proposed method relative to existing techniques.
From: Improving spectral efficiency in distributed massive MIMO in multi-user downlink millimeter wave
Method | Architecture | Optimization Strategy | Optimization Strategy | Complexity |
|---|---|---|---|---|
Analog Beamforming | Phase only | Fixed phase shifters | Low | Very low |
OMP22 | Fully connected | Greedy algorithm | Moderate | Moderate |
PE-AltMin11 | Fully connected | Alternating Minimization | High | High |
Fully Digital | Fully baseband | Direct SVD or MMSE | Very High | Very High |
Proposed Method | Fully-connected, Distributed SBSs | Two-stage iterative using KKT | Very High | Low to Moderate |
