QR-RLS Based Minimum Variance Distortionless Responses Beamformer

In this paper, a QR-RLS based minimum variance distortionless responses (MVDR) method, and its systolic array processor, are proposed. The QR-RLS based MVDR has many advantages, such as numerical stability, computational efficiency and pipelined structure in implementation. We also point out that the conventional method, MVDR using QR-RLS method by directly forcing the desired signal to zero is not correct. Numerical experiments are carried out to illustrate the effectiveness of the proposed method

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