Name
Title | ||
|---|---|---|
Dual-Domain Adaptive Beamformer Under Linearly and Quadratically Constrained Minimum Variance |
Abstract | ||
|---|---|---|
In this paper, a novel adaptive beamforming algorithm is proposed under a linearly and quadratically constrained minimum variance (LQCMV) beamforming framework, based on a dual-domain projection approach that can efficiently implement a quadratic-inequality constraint with a possibly rank-deficient positive semi-definite matrix, and the properties of the proposed algorithm are analyzed. As an application, relaxed zero-forcing (RZF) beamforming is presented which adopts a specific quadratic constraint that bounds the power of residual interference in the beamformer output with the aid of interference-channel side-information available typically in wireless multiple-access systems. The dual-domain projection in this case plays a role in guiding the adaptive algorithm towards a better direction to minimize the interference and noise, leading to considerably faster convergence. The robustness issue against channel mismatch and ill-posedness is also addressed. Numerical examples show that the efficient use of interference side-information brings considerable gains. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/TSP.2013.2254481 | IEEE Transactions on Signal Processing |
Keywords | Field | DocType |
adaptive signal processing,array signal processing,interference suppression,multi-access systems,lqcmv beamforming framework,channel mismatch,dual-domain adaptive beamformer,dual-domain projection,dual-domain projection approach,interference minimization,interference-channel side-information,linearly-quadratically constrained minimum variance,noise minimization,quadratic-inequality constraint,rank-deficient positive semidefinite matrix,relaxed zero-forcing beamforming,residual interference,wireless multiple-access systems,adaptive beamforming,lcmv,lqcmv,dual-domain adaptive algorithm,relaxed zero forcing,vectors,transmitters,interference,wireless communication | Convergence (routing),Minimum-variance unbiased estimator,Beamforming,Mathematical optimization,Adaptive beamformer,Control theory,Quadratic equation,Robustness (computer science),Interference (wave propagation),Adaptive algorithm,Mathematics | Journal |
Volume | Issue | ISSN |
61 | 11 | 1053-587X |
Citations | PageRank | References |
6 | 0.46 | 7 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Masahiro Yukawa | 1 | 272 | 30.44 |
| Youngchul Sung | 2 | 621 | 45.85 |
| Gilwon Lee | 3 | 148 | 8.70 |