TY - GEN
T1 - Robust broadband beamforming based on frequency invariance constraints and worst-case performance optimization
AU - Zhao, Yong
AU - Liu, Wei
AU - Langley, Richard J.
PY - 2010/3
Y1 - 2010/3
N2 - Two novel broadband beamformers robust against look direction estimation errors are proposed. One is designed by imposing a frequency invariance constraint and limiting the magnitude response of the beamformer within a pre-defined range, and the other one is obtained by combining the frequency invariance constraint and the worst-case performance optimization method, both of which are formulated as convex optimization problems and solved efficiently using existing convex optimisation techniques. Compared with conventional methods, a more efficient and effective control over the beamformer's response is achieved, leading to an improved performance, as shown by simulations.
AB - Two novel broadband beamformers robust against look direction estimation errors are proposed. One is designed by imposing a frequency invariance constraint and limiting the magnitude response of the beamformer within a pre-defined range, and the other one is obtained by combining the frequency invariance constraint and the worst-case performance optimization method, both of which are formulated as convex optimization problems and solved efficiently using existing convex optimisation techniques. Compared with conventional methods, a more efficient and effective control over the beamformer's response is achieved, leading to an improved performance, as shown by simulations.
UR - http://www.scopus.com/inward/record.url?scp=77953868253&partnerID=8YFLogxK
U2 - 10.1109/ISCCSP.2010.5463393
DO - 10.1109/ISCCSP.2010.5463393
M3 - Conference article published in proceeding or book
AN - SCOPUS:77953868253
SN - 9781424462858
T3 - Final Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010
BT - Final Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010
T2 - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP-2010
Y2 - 3 March 2010 through 5 March 2010
ER -