Title :
A least squares approach to the design of frequency invariant beamformers
Author :
Yong Zhao ; Wei Liu ; Langley, Richard
Author_Institution :
Dept. of Electron. & Electr. Eng., Commun. Res. Group, Univ. of Sheffield, Sheffield, UK
Abstract :
A least squares formulation for the design of frequency invariant beamformers (FIBs) is proposed with two solutions provided. One is based on the Lagrange multipliers method and the other one is based on an orthogonal decomposition of the coefficient vector to transform the constrained design problem into an unconstrained one. Design examples including both broadside and off-broadside main beams are provided with satisfactory frequency invariant property and sidelobe attenuation.
Keywords :
array signal processing; least squares approximations; Lagrange multipliers; frequency invariant beamformers; least squares formulation; orthogonal decomposition; Array signal processing; Broadband communication; Quantum cascade lasers; Frequency invariant beamformer; Lagrange multipliers; Least squares; orthogonal decomposition;
Conference_Titel :
Signal Processing Conference, 2009 17th European
Conference_Location :
Glasgow
Print_ISBN :
978-161-7388-76-7
