Name
Abstract | ||
|---|---|---|
In this paper, we consider relay precoder optimization for a multi-antenna amplify-and-forward (AF) relaying system using imperfect channel state information (CSI) with either additive or multiplicative deterministic uncertainties. Adopting worst-case robustness, we aim to maximize the worst-case received signal-to-noise ratio (SNR) at the destination subject to the power constraint at the relay. Despite the non-convexity of the design problem, we obtain a closed-form solution and discover that beamforming along the nominal channel direction achieves the best performance with channel uncertainties. Based on the optimal solution, we further analyze the impact of imperfect CSI on the performance of the robust multi-antenna AF relaying system and carry out simulations to verify our analysis. © 1997-2012 IEEE. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/LCOMM.2013.022713.130106 | IEEE Communications Letters |
Keywords | Field | DocType |
Uncertainty,Relays,Signal to noise ratio,Array signal processing,Robustness,Additives,Optimization | Beamforming,Imperfect,Saddle point,Multiplicative function,Computer science,Control theory,Signal-to-noise ratio,Communication channel,Robustness (computer science),Relay | Journal |
Volume | Issue | ISSN |
17 | 4 | 1089-7798 |
Citations | PageRank | References |
8 | 0.50 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hong Shen | 1 | 96 | 8.53 |
| Wei Xu | 2 | 9 | 1.53 |
| Jiaheng Wang | 3 | 771 | 51.96 |
| Chunming Zhao | 4 | 671 | 64.30 |