Name
Title | ||
|---|---|---|
REEL-BF Design: Achieving the SDP Bound for Downlink Beamforming With Arbitrary Shaping Constraints. |
Abstract | ||
|---|---|---|
This paper considers the beamforming design for a multiuser multiple-input single-output downlink with an arbitrary number of (context specific) shaping constraints. In this setup, the state-of-the-art beamforming schemes cannot attain the well known performance bound promised by the semidefinite program (SDP) relaxation technique. To close the gap, we propose a redundant-signal embedded linear beamforming (REEL-BF) scheme, where each user is assigned with one information beamformer and several shaping beamformers. It is shown that the proposed REEL-BF scheme can perform general rank-$K$ beamforming for user symbols in a low-complexity and structured manner. In addition, sufficient conditions are derived to guarantee that the REEL-BF scheme always achieves the SDP bound for linear beamforming schemes. Based on such conditions, an efficient algorithm is then developed to obtain the optimal REEL-BF solution in polynomial time. Numerical results demonstrate that the proposed scheme enjoys substantial performance gains over the existing alternatives. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/TSP.2017.2673811 | IEEE Trans. Signal Processing |
Keywords | Field | DocType |
Array signal processing,Signal to noise ratio,Interference,Downlink,Mobile communication,Information science,Cognitive radio | WSDMA,Beamforming,Mathematical optimization,Signal-to-noise ratio,Relaxation technique,Interference (wave propagation),Time complexity,Mathematics,Cognitive radio,Telecommunications link | Journal |
Volume | Issue | ISSN |
65 | 10 | 1053-587X |
Citations | PageRank | References |
1 | 0.35 | 21 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Feng Wang | 1 | 6 | 1.15 |
| Chongbin Xu | 2 | 23 | 5.10 |
| Yongwei Huang | 3 | 814 | 50.83 |
| Xin Wang | 4 | 1169 | 111.70 |
| Xiqi Gao | 5 | 3043 | 217.05 |