Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

A constraint projection approach for robust adaptive beamforming

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
2 Author(s)
Feldman, D.D. ; Signal & Image Process. Inst., California Univ., Los Angeles, CA, USA ; Griffiths, Lloyd J.

When the optimal signal-to-interference-plus-noise-power ratio (SINR) at the output of the linearly constrained minimum variance beamformer is large, small perturbation errors in the steering constraint can cause substantial degradation of the SINR. Even if there is no perturbation, an excessive number of data snapshots can be required for the SINR to converge to its optimal value. To alleviate both the perturbation and sample data problems, a novel approach is proposed-projecting the nominal steering vector onto the signal-plus-interference subspace to obtain a new steering constraint. Analysis suggests that the problems of perturbation error and insufficient data are closely related

Published in:

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Date of Conference:

14-17 Apr 1991