Title :
Recursive robust variable loading mvdr beamforming in impulsive noise environment
Author :
Zou, Y.X. ; Chan, S.C. ; Wan Bo ; Zhao Jing
Author_Institution :
Shenzhen Grad. Sch., Adv. Digital Signal Process. Lab., Peking Univ., Shenzhen
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
This paper proposes a new recursive variable loading minimum variance distortionless response (RVL-MVDR) algorithm for robust beamforming in impulsive noise environment. It employs a new method for robust estimation of the sample covariance matrix under impulsive noise and a new method for computing the data-dependent loading level using robust statistics. Computer simulations suggest that the proposed algorithm performs considerably better than the conventional sample matrix inversion (SMI)-MVDR and variable loading (VL) MVDR algorithms in impulsive noise environment.
Keywords :
array signal processing; covariance matrices; estimation theory; impulse noise; matrix inversion; MVDR beamforming; covariance matrix; impulsive noise environment; minimum variance distortionless response algorithm; recursive robust variable loading; robust beamforming; robust estimation; robust statistics; sample matrix inversion; Additive noise; Array signal processing; Covariance matrix; Interference; Noise robustness; Sensor arrays; Signal processing algorithms; Statistics; Uncertainty; Working environment noise;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746190