Title :
Adaptive Wideband Beamforming with Frequency Response Constraints
Author :
Chen, MingJian ; Luo, Jingqing
Author_Institution :
Key Lab. of Electron. Restriction, 309 Res. Electron. Eng. Inst., Hefei, China
Abstract :
In this paper, a novel adaptive linearly constrained minimum variance (LCMV) beam former is proposed based on frequency response constraints. With frequency response constrained optimization criteria, the new constraint vector and thus the new weight vector are designed to improve the output signal to interference plus noise ratio (SINR), compared to the conventional distortion less constraint. The proposed methods flexibly control tradeoff between the output SINR performance and signal distortion. Simulation results are presented to demonstrate that the optimized beam former has higher overall performance about the SINR performance and signal distortion.
Keywords :
array signal processing; frequency response; optimisation; vectors; SINR; adaptive LCMV beamformer; adaptive linearly constrained minimum variance beamformer; adaptive wideband beamforming; constraint vector; distortion less constraint; flexibly control tradeoff; frequency response constrained optimization criteria; signal distortion; signal to interference plus noise ratio; weight vector; Array signal processing; Arrays; Distortion; Interference; Signal to noise ratio; Vectors; Wideband; SINR performance; frequency constraints; frost beamformer; signal distortion; wideband adaptive beamforming;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control, 2011 First International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-0-7695-4519-6
DOI :
10.1109/IMCCC.2011.21
