1. شکلدهی پرتو کمینه واریانس مبتنی بر بازسازی ماتریس کواریانس با بردارهای متعامد.
- Author
-
سامان رضایی زاده and مهدی بکرانی
- Subjects
COVARIANCE matrices ,BEAMFORMING - Abstract
Beamforming methods based on minimum variance have poor performance in case there is an error in estimating the covariance matrix of noise and interference. One of the error factors in estimating the covariance matrix is the presence of desirable signal components in estimated noise and interference vectors, which reduces the output SINR level of the beamformer. In this paper, in order to make the beamformer algorithm robust to the incorrect estimation of noise and interference covariance matrix, a covariance matrix reconstruction method using the orthogonal steer vectors obtained from the Gram Schmidt algorithm along with a diagonal loading is applied. Simulation results show the superiority of the proposed method in the improvement of beam pattern, angle estimation of interferences, and output SINR level, compared to the counterparts. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF