Improved orthogonal projection approach utilising interference covariance matrix reconstruction for adaptive beamforming

Xiaopeng Yang*, Lu Yan, Yuze Sun, Tao Zeng

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

18 引用 (Scopus)

摘要

When the training snapshots are contaminated by the desired signal, the performance of the orthogonal projection (OP) approach degrades significantly. Therefore, an improved OP adaptive beamforming is proposed by reconstructing interference covariance matrix to eliminate the desired signal cancellation effect. In the proposed method, by integrating the Capon spatial spectrum over a region separated from the desired signal direction, the interference-plus-noise covariance matrix is reconstructed first to remove the desired signal component from the sample covariance matrix. Subsequently, the interference subspace is estimated by eigenvalue decomposition, and then the adaptive weight vector is calculated using the OP algorithm to eliminate the noise perturbation. Simulation results show that the performance of the proposed algorithm is almost the same as the optimum beamforming.

源语言英语
页(从-至)1446-1447
页数2
期刊Electronics Letters
50
20
DOI
出版状态已出版 - 25 9月 2014

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