Fig. 3From: Realified L1-PCA for direction-of-arrival estimation: theory and algorithmsAlgorithm for optimal computation of the 2K L1-PCs of the rank- 2D data matrix \(\overline {\mathbf {Y}}_{2D \times 2N}\) with polynomial (w.r.t. N) asymptotic complexity \({\mathcal {O}}\left (N^{4DK - m+1}\right)\) (m=1 for K=1; m=2K, for K>1)Back to article page