Title :
Broadband Interference Suppression Performance of Minimum Redundancy Arrays
Author :
Duan, Huiping ; Ng, Boon Poh ; See, Chong Meng Samson ; Fang, Jun
Author_Institution :
Sch. of Electr. & Electron. Engi- neering/NTU-Temasek Labs., Nanyang Technol. Univ., Singapore
fDate :
6/1/2008 12:00:00 AM
Abstract :
The broadband interference suppression performance of the minimum redundancy array (MRA) used in the linearly constrained minimum variance (LCMV) beamformer is studied in this paper. The ideal continuous-time, infinite-length filter instead of the realistic finite-order digital filter is assumed in the array processor. The expressions of the power spectrum of the beamformer output in different scenarios are derived to compute the mean output power. Several original properties of the performance of the MRA compared with that of the uniform linear array (ULA) are obtained by mathematical proofs and numerical studies.
Keywords :
array signal processing; interference suppression; redundancy; array processor; broadband interference suppression; finite-order digital filter; linearly constrained minimum variance beamformer; minimum redundancy arrays; uniform linear array; Apertures; Bandwidth; Digital filters; Finite impulse response filter; Geometry; Interference suppression; Laboratories; Microphone arrays; Sensor arrays; Signal processing; Broadband LCMV beamformer; interference and noise suppression gain; minimum redundancy array (MRA);
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2007.916130
