Title :
Penalty function method for constrained DOA-based beamforming
Author :
Demarcke, Pieterjan ; Rogier, Hendrik
Author_Institution :
Dept. of Inf. Technol., Ghent Univ., Ghent, Belgium
Abstract :
Through careful selection of the penalty factors lambdan and keeping the constraint function piecewise linear close to the boundary of the feasible region (p = 1), we were able to transform the constrained problem into an unconstrained one. Compared to the Lagrange multiplier method, far more complex problems can be solved. Simulations confirm that this new approach yields valid results.
Keywords :
array signal processing; direction-of-arrival estimation; frequency division multiplexing; numerical analysis; constrained DOA-based beamforming; constraint function piecewise linear; penalty function method; Algorithm design and analysis; Antenna radiation patterns; Array signal processing; Constraint optimization; Downlink; Equations; Frequency conversion; Information technology; Lagrangian functions; Phased arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171466
