Abstract
A simple suboptimal power allocation method is proposed for SC-FDMA systems. It is known that the performance of constant power-based allocation methods is close to that of optimal solutions. In this letter, by utilizing the waterfilling condition inequality derived for SCFDMA systems, a threshold is set to select subcarriers for loading constant power to these selected subcarriers. It offers competitive performance as confirmed by the simulation results.
| Original language | English |
|---|---|
| Pages (from-to) | 771-775 |
| Number of pages | 5 |
| Journal | IEICE Transactions on Communications |
| Volume | E93-B |
| Issue number | 3 |
| DOIs | |
| State | Published - 2010 |
Keywords
- Power allocation
- SC-FDMA
- Spectral efficiency
- Waterfilling methods