Title :
A new robust beamforming method with antennae calibration errors
Author :
Wu, S.Q. ; Zhang, J.Y.
Author_Institution :
Wireless Network, Nortel Networks, Ottawa, Ont., Canada
Abstract :
We consider adaptive array beamforming with calibration errors. We propose a new beamforming method which is robust when the looking direction mismatches the true physical direction of arrival. The new method solves a convex quadratic programming problem with simple polyhedron constraint. Unlike the conventional modeling for calibration, this polyhedron constraint is specially designed and algebraically constructed. Its field angles can be tuned to realize space sectorization. The extensive simulations have shown that the new method is very robust and superior to the traditional one
Keywords :
adaptive antenna arrays; array signal processing; calibration; direction-of-arrival estimation; measurement errors; quadratic programming; adaptive array beamforming; antenna calibration errors; convex quadratic programming problem; direction of arrival; field angles; look direction; polyhedron constraint; robust beamforming method; simulations; space sectorization; Adaptive arrays; Array signal processing; Calibration; Covariance matrix; Frequency; Robustness; Sensor arrays; Sensor phenomena and characterization; Vectors; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.796795